Honeywell KHF1050 High Frequency Communications Transceiver User Manual 006 10640 0000

Honeywell International Inc. High Frequency Communications Transceiver 006 10640 0000

Users Manual

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Preliminary - Subject to Change Without Notice
SYSTEM INSTALLATION
MANUAL
KHF 1050
HF COMMUNICATION SYSTEM
MANUAL NUMBER 006-10640-0000
REVISION 0, March 2003
Preliminary - Subject to Change Without Notice
WARNING
PRIOR THE EXPORT OF THIS DOCUMENT, REVIEW FOR EXPORT LICENSE
REQUIREMENT IS NEEDED.
COPYRIGHT NOTICE
©2003 Honeywell International Inc.
REPRODUCTION OF THIS PUBLICATION OR ANY PORTION THEREOF BY ANY MEANS
WITHOUT THE EXPRESS WRITTEN PERMISSION OF HONEYWELL IS PROHIBITED. FOR
FURTHER INFORMATION CONTACT THE MANAGER, TECHNICAL PUBLICATIONS,
HONEYWELL, ONE TECHNOLOGY CENTER, 23500 WEST 105TH STREET OLATHE KS
66061 TELEPHONE: (913) 782-0400.
Preliminary - SubjectN
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System Installation Manual
P/N 006-10640-0000
KHF 1050
HF Communication System
(Also known as Primus HF 1050)
KAC 1052 Antenna Coupler
KPA 1052 Power Amplifier
KRX 1053 Receiver/Exciter
Compatible HF Control Units
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REVISION HISTORY
KHF 1050
SYSTEM INSTALLATION MANUAL
23-10-09
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006-10640-0000
Revision 0
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DATE
DESCRIPTION
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Original issue.
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RH-1
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SYSTEM INSTALLATION MANUAL
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Title
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Installation and
Maintenance
Revision
History
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Mar/2003
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
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2024
2025
2026
2027
2028
2029
2030
2031
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Mar/2003
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Table of Contents
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Introduction
INTRO-1 Mar/2003
INTRO-2 Mar/2003
Glossary
G-1
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G-3
G-4
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Mar/2003
Mar/2003
Mar/2003
Description and
Operation
10
11
12
13
14
15
16
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Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Mar/2003
Testing and
Fault Isolation
1001
1002
Mar/2003
Mar/2003
F INDICATES FOLDOUT PAGES - PRINT ONE SIDE ONLY
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TABLE OF CONTENTS
INTRODUCTION
SECTION
1.
2.
3.
PAGE
General
Layout of Material
Revision Service
INTRO-1
INTRO-1
INTRO-1
DESCRIPTION AND OPERATION
SECTION
1.
2.
3.
4.
5.
6.
PAGE
System Description
A. System Overview
B. System Component Descriptions
C. Component Installation Kits
D. Equipment Required But Not Supplied
E. Optional (Non-Essential) Aircraft Equipment
F. Related Publications
Component Configurations
A. KAC 1052 Antenna Coupler Configurations
B. KPA 1052 Power Amplifier Configurations
C. KRX 1053 Receiver/Exciter Configurations
D. RM-855 Radio Management Unit Configurations
E. MCDU Multifunction Control and Display Unit Configurations 9
F. PS440 Control Display Unit Configurations
G. ???? Antenna Configurations
H. Long Wire HF Antenna Configurations
System Leading Particulars
10
A. General Specifications
10
B. System Operating Modes
10
C. Component Leading Particulars
13
System Function
15
A. System Functional Overview
15
B. Dual System
16
Component Functions
16
A. RM-855 Radio Management Unit Function
16
B. MCDU Multfunction Control and Display Unit Function
16
C. PS440 Control Display Unit Function
16
System Inputs/Outputs
17
A. Input/Output Signals
17
PAGE
TABLE
COMMENTARY: ALL SECTION TABLES TO BE LISTED HERE AS THEY ARE INSERTED.
PAGE
FIGURE
COMMENTARY: ALL SECTION FIGURES TO BE LISTED HERE AS THEY ARE INSERTED
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TABLE OF CONTENTS
TESTING AND FAULT ISOLATION
SECTION
PAGE
1.
Fault Isolation
1001
2.
System Performance Check
A. Preliminary Check
B. Receiver Performance Check
C. Transmitter Performance Check
1002
1002
1002
1002
INSTALLATION AND MAINTENANCE
SECTION
1.
2.
3.
4.
5.
6.
7.
8.
PAGE
General Coverage
2001
Unpacking
2001
Pre-installation Testing
2001
Equipment Changes and Markings
2002
Installation Planning
2002
A. General Considerations
2002
B. Location of Equipment
2002
C. Interwiring and Cable Fabrication
2017
D. Strapping Options
2052
Equipment Installation
2055
A. Bonding Connections
2055
B. KCU 951 Control Unit Installation
2056
C. KFS 594 Miniature Control Unit Installation
2056
D. KA 594 Bus Adapter Installation
2056
E. KCU 1051 Control Display Unit Installation
2056
F. KAC 952 Power Amplifier/Antenna Coupler Installation
2057
G. KTR 953 Receiver/Exciter Installation
2061
H. Antenna Installation
2062
I. KA 161 External Capacitor Installation
2063
J. KA 158 Bridging Amplifier Installation
2064
K. KA 160 Dual Antenna Adapter Installation
2064
L. KA 162 Dual External Capacitor Installation
2065
Inspection, System Checkout, and Flight Test Procedures
2065
A. Inspection
2065
B. System Checkout
2068
C. Flight Test
2068
Removal and Re-installation
2069
A. KCU 951 Control Unit Removal and Re-installation
2069
B. KFS 594 Miniature Control Unit Removal and Re-installation 2069
C. KA 594 Bus Adapter Removal and Re-installation
2069
D. KCU 1051 Control Display Unit Removal and Re-installation 2069
E. KAC 952 Power Amplifier/Antenna Coupler Removal
2070
F. KTR 953 Receiver/Exciter Removal and Re-installation
2070
G. KA 98 Antenna Removal and Re-installation
2071
H. KA 161 External Capacitor Removal and Re-installation
2072
I. KA 158 Bridging Amplifier Removal and Re-installation
2073
J. KA 160 Dual Antenna Adapter Removal and Re-installation
2074
K. KA 162 Dual External Capacitor Removal and Re-installation 2074
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TABLE OF CONTENTS
9.
Maintenance Procedures
A. In-Aircraft Adjustments
B. System Protection
C. Lubrication
D. Cleaning
10. System Maintenance Programs
A. System Maintenance Recommendations
B. Field Alignment of KTR 953 Receiver/Exciter (-51, -53)
2075
2075
2075
2076
2076
2076
2076
2076
PAGE
TABLE
COMMENTARY: ALL SECTION TABLES TO BE LISTED HERE AS THEY ARE INSERTED.
PAGE
FIGURE
COMMENTARY: ALL SECTION FIGURES TO BE LISTED HERE AS THEY ARE INSERTED
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TABLE OF CONTENTS
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INTRODUCTION
1.
General
This manual provides description and operation, testing,
fault isolation, installation, maintenance, and flightline
checkout procedures for the KHF 1050 HF Communication System.
2.
Layout of Manual
Section 1
Section 1000
Section 2000
Description and Operation
Testing and Fault Isolation
Installation and Maintenance
Refer to the Table of Contents for the location of applicable
information.
Weights and measurements in the manual are in English units,
unless otherwise stated.
3.
Revision Service
The manual will be revised as necessary to reflect current
information. Service Bulletins may be issued separately, and
will be incorporated in the manual as appropriate.
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Glossary of Terms and Abbreviations
A/C
Aircraft
AGC
Automatic Gain Control
AME
Amplitude Modulation Equivalent
ARM
The ready to operate status of a function/device.
CFR
Clarifier
CLK
Clock
COMP
Compatible
CPLR
Coupler
GND
Ground
HF
High Frequency
LCD
Liquid Crystal Display
LSB
Lower Side Band
MCDU
Multifunction Control and Display Unit
MIC
Microphone
NVG
Night Vision Goggles
ORTHOGONAL
Intersecting at right angles.
PA
Power Amplifier
PROC
Processing, Processor
PEP
Peak Envelope Power
PTT
Push To Talk
PWR
Power
RC
Reduced Carrier
RCVR
Receiver
RDY
Ready
REF
Reference
RF
Radio Frequency
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Glossary of Terms and Abbreviations
RMU
Radio Management Unit
RTCA
Radio Technical Commission for Aeronautics
RTN
Return
RX
Receive
SELCAL
SELective CALling
SELECTIVITY
The ability of a receiver to differentiate desired
RF signals from undesired signals and other
disturbances within specified frequency and dB
limits.
SENSITIVITY
The ability of a receiver to detect and demodulate
desired signals at specified minimum RF levels.
SIDETONE
The small portion of the transmitter signal that is
fed back to the receiver’s audio circuit.
SIG
Signal
SQUELCH
The ability to disable the demodulated output of a
radio receiver until a preset level of RF input is
received. The level of received RF signal required
to break squelch is determined by the squelch
control setting.
SSB
Single Side Band
SYN
Synthesize(r), Synchronize(r)
TCXO
Temperature compensated crystal oscillator
TRANLINE
Transmission Line
TX
Transmit
USB
Upper Side Band
VOL
Volume
VSWR
Voltage Standing Wave Ratio
XCTR
Exciter (low level signal source that drives power
amplified transmitted signal).
XMT
Transmit
XMTR
Transmitter
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DESCRIPTION AND OPERATION
1. System Description
A basic KHF 1050 HF Communication System consists of three
individual units: KAC 1052 Antenna Coupler, KPA 1052 Power
Amplifier, and KRX 1053 Receiver/Exciter. A compatible control
unit is also required. Control units compatible with the system
include the Gables PS440, Honeywell MCDU Multifunction Control
and Display Unit and Honeywell RM-855 Radio Management Unit.
NOTE:
For complete installation information on the Gables
PS440 refer to the PS440 Control Display Unit
Installation Manual P/N 006-10655-0000.
For complete installation information on the MCDU
Multfuntion Control and Display Unit refer to the MCDU
Installation Manual P/N XXXX.
For complete installation information on the RM-855
Radio Management Unit refer to the RM-855 Installation
Manual P/N XXXX.
Typical System
Figure 1
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PS440 Control Display Unit
Figure 2
MCDU Multfunction Control and Display Unit
Figure 3
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RM-855 Radio Management Unit
Figure 4
1.A. System Overview
The KHF 1050 HF voice and data communication system is a solid
state design with 200 watts (PEP) of output power, operating
at 28 Vdc. Frequency of operaton ranges between 2.0 and
29.9999 MHz with 100 Hz resolution. Systems may be strapped
to set the upper frequency limit to 22.9999 MHz.
NOTE:
Operations are limited to 25 MHz for aircraft
installation by aeronautical mobile band frequency
limits.
A configuration is called a “dual system” when two KHF 1050
HF systems are installed in the same aircraft to share one
antenna. Both systems may receive simultaneously, but only one
system is chosen to transmit at any one time. An auto select
transmit scheme determines which system is selected to
transmit.
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In an auto select configuration, the first system (System 1
or System 2) to be keyed is selected to transmit, and
transmission from the other system is inhibited until the
first system has stopped transmitting.
The RM-855 Radio Management Unit, the MDCU Multifunction
Control Display Unit, or the PS440 Stand-Alone HF Controller
determines the frequency and mode of operation of the system
and displays that information to the pilot.
Receiver and low level transmitter signals are located in the
KRX 1053 Receiver/Exciter. The KRX 1053 Receiver/Exciter
employs an oven controlled oscillator, which requires a short
warm-up period to generate the frequency reference required
for the synthesizer.
The KAC 1052 Power Amplifier amplifies the excitation signal
from the KRX 1053 Receiver/Exciter to 200 watts PEP, or 50
watts of carrier power in AM. The amplified signal is routed
to the KAC 1052 Antenna Coupler, which matches the various
impedances of the antenna to the 50 ohm output of the
transmitter. In receive function, signals from the antenna
pass through the KAC 1052 Antenna Coupler to the KRX 1053
Receiver/Exciter.
The KHF 1050 can be installed as a single or dual HF system.
In a dual system when one system is transmitting, receive on
the other system is disbled. The single antenna in a dual
system can be tuned to only one frequency at any given time.
If the two systems are tuned to different frequencies, the
strongest reception is realized on the primary system, which
is tuned to the same frequency as the antenna. The primary
system is defined as the system that was last used for
transmission in auto-select configuration. The secondary
system would employ an internal bridging amplifier to improve
reception. No external accessories ae required for dual system
operation for the KHF 1050.
When two independent HF systems employing two separate
antennas are used on one aircraft, it is important to maximize
separation between the antennas. A minimum of 6 ft. (2 m.)
separation is recommended and the antennas should be
configured as orthogonally as possible.
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WARNING:
IN A DUAL KHF 1050 INSTALLATION, PERMANENT DAMAGE
WILL OCCUR TO THE SYSTEM IF EITHER THE RF OR DC
CABLES ARE NOT CONNECTED PROPERLY BETWEEN HF1 AND
HF2. IT IS RECOMMENDED THAT HF1 CABLES BE COLOR
CODED RED AND HF2 CABLES BE COLOR CODED GREEN.
Several operating mode options are available for the KHF 1050
HF system to meet particular operational needs.
USB (upper sideband A3J) AME (amplitude modulation equivalent
A3H) are standard modes of operation permitted on all system
configurations.
LSB (lower sideband A3J) operation is not permitted for
stations operating under Part 87 FCC (USA) regulations. LSB
may be enabled for use in regions or applications where its
use is authorized.
A seldom used mode A3A (USB reduced carrier) if available for
use in locations that may utilize the mode.
Table 23, Modes of Operation, lists the modes of operation
applicable to the PS440, MCDU, and RM-855 controllers.
The system is capable of operating in a channel (frequency
preset) mode or a direct frequency mode. A microcomputer
within the system provides the following functions:
• controls the non-volatile storage of frequency, mode and
channel data
• controls a multiplexed eight-digit frequency display
• provides synthesizer serial data tuning information
• provides tune and transmit mode control logic
• provides band switching information
• preset antenna tune
• built-in test with fault display
Dashed lines and shaded boxes in the block diagram, Figure 5,
indicate for future use.
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Typical System Block Diagram
Figure 5
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This version of the block diagram does not attempt to show
the interconnectins between the receiver/exciter, the power
amplifier, and the antenna coupler.
This version of the block diagram corresponds to the content
of Technical Specification Rev C, January, 2002.
1.B. System Component Descriptions
The required and optional equipment of a KHF 1050 HF
Communication System is listed below:
•
•
•
•
•
1.B.(1)
KAC 1052 Antenna Coupler (required)
KPA 1052 Power Amplifier (required)
KRX 1053 Receiver/Exciter (required)
Compatible HF Control Display Unit (required)
Mounting Tray Hardware (optional)
KAC 1052 Antenna Coupler
(P/N 064-01074-0001)
Under microprocessor control, the KAC 1052 antenna coupler
selects tuning network configurations, impedance
transformations and binary capacitance and inductance to
produce a VSWR of 2.5:1 or less upon initial tune. The
VSWR may then deteriorate to 3:1 before the coupler will
retune when transmit is next initiated.
1.B.(2)
KPA 1052 Power Amplifier
(P/N 064-01072-0101)
The KPA 1052 is a high frequency power amplifier. From 2.0
to 29.999MHz, the power amplifier is capable of linear
amplification of a 0dBm signal to a 200 Watt output level
at 50 ohms input and output impedance.
1.B.(3)
KRX 1053 Receiver/Exciter
(P/N 064-01073-0101)
The KRX 1053 is a high frequency receiver/exciter that is
designed to operate from 2.0 to 29.999MHz synthesized in
100Hz steps. The unit will operate Amplitude Modulation
Equivalent, Upper and Lower Sideband modes and
Required-Carrier mode.
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1.B.(4)
Gables PS440 Control Display Unit
(P/N 071-01605-0101, -0201, -1101, -1201, -2101)
The PS440 stand-alone HF COMM Control Panel is designed
to provide control of a single or dual HF COMM radio
system. Full operational control of the HF system is
accomplished via a dedicated low speed, digital ARINC 429
bus.
1.B.(5)
MCDU Multfunction Control and Display Unit
(P/N 7025725-901, -910, -920, -930, -940)
This multi-function radio controller provides control of
all the functions of the KHF 1050 system via ARINC 429.
Frequency, channel, squelch type and level, emission type
and power level are selected from the MCDU.
1.B.(6)
RM-855 Radio Management Unit
(P/N 7013270-967/968)
The RM-855 displays frequency, mode and maintenance
information. Via the ARINC 429 bus it provides frequency,
channel, transmitter power and squelch level selection.
It also has fault monitoring and fault annunciation.
1.C. Component Installation Kits
COMMENTARY: THE FOLLOWING INSTALLATION KIT INFORMATION IS
PRELIMINARY, PENDING CHANGE ORDER RELEASE.
1.C.(1)
KAC 1052 Antenna Coupler Installation Kits
Part Number
Description
UM
Qty
030-00005-0000
CONN BNC UG 99C/U
EA
030-01157-0011
SOCKET CRMP 20G
EA
37
030-03517-0004
CONN, D-SUB, RECPT, CRMP, HOOD, 37 POS
EA
047-06261-0036
GROUND STRAP
EA
057-05944-0027
VERT TSO KIT LABEL, KAC 1052
EA
071-00200-0000
VERT TRAY ASSEMBLY KAC 1052
EA
KAC 1052 Single Vertical Installation Kit
(P/N:050-03658-0000)
Table 1
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Part Number
Description
UM
Qty
057-05944-0034
VERT TSO KIT LABEL, KAC 1052
EA
071-00200-0000
VERT TRAY ASSEMBLY, KAC 1052
EA
KAC 1052 Single Vertical Installation Kit (tray only)
(P/N:050-03658-0001)
Table 2
Part Number
Description
UM
Qty
030-00005-0000
CONN BNC UG 88C/U
EA
030-01157-0011
SOCKET CRMP 20G
EA
37
030-03517-0004
CONN, D-SUB, RECPT, CRMP, HOOD,37 POS
EA
057-05944-0036
TSO KIT LABEL
EA
KAC 1052 Single Vertical Install Kit (connectors only)
(P/N:050-03658-0002)
Table 3
Part Number
Description
UM
Qty
030-00005-0000
CONN BNC UG 88C/U
EA
030-01157-0011
SOCKET CRMP 20G
EA
37
030-03517-0004
CONN, D-SUB, RECPT, CRMP, HOOD,37 POS
EA
047-06261-0036
GROUND STRAP
EA
047-12728-0001
KAC 1052 GROUND STRAP
EA
057-05944-0029
HORIZ TSO KIT LABEL, KAC 1052
EA
071-00202-0000
HORIZ TRAY ASSEMBLY, KAC 1052
EA
155-02988-0015
HN CABLE
EA
KAC 1052 Single Horizontal Installation Kit
(P/N:050-03660-0000)
Table 4
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Part Number
Description
UM
Qty
030-00005-0000
CONN BNC UG 88C/U
EA
030-01157-0011
SOCKET CRMP 20G
EA
74
030-03517-0004
CONN, D-SUB, RECPT, CRMP, HOOD, 37 POS
EA
047-06261-0036
GROUND STRAP
EA
057-05944-0030
DUAL VERT KAC 1052 TSO KIT LABEL
EA
071-00200-0000
VERT TRAY ASSEMBLY KAC 1052
EA
UM
Qty
KAC 1052 Dual Vertical Installation Kit
(P/N:050-03661-0000)
Table 5
Part Number
Description
057-05944-0035
DUAL VERT TSO KIT LABEL, KAC 1052
EA
071-00200-0000
VERT TRAY ASSEMBLY, KAC 1052
EA
KAC 1052 Dual Vertical Installation Kit (tray only)
(P/N:050-03661-0001)
Table 6
Part Number
Description
UM
Qty
030-00005-0000
CONN BNC UG 88C/U
EA
030-01157-0011
SOCKET CRMP 20G
EA
74
030-03517-0004
CONN, D-SUB, RECPT, CRMP, HOOD,37 POS
EA
057-05944-0039
TSO KIT LABEL
EA
KAC 1052 Dual Vertical Installation Kit (connectors only)
(P/N:050-03661-0002)
Table 7
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1.C.(2)
KPA 1052 Power Amplifier Installation Kits
Part Number
Description
UM
Qty
030-00005-0000
CONN BNC UG 88C/U
EA
030-01157-0011
SOCKET CRMP 20G
EA
25
030-01466-0002
CONN, D-SUB, CONTACT, CRMP, PWR, SIZE 8
EA
030-03516-0001
CONN, D-SUB, RECPT, COMBO-27W2, CRMP
EA
057-05944-0022
TSO KIT LABEL
EA
071-00185-0000
TRAY ASSEMBLY
EA
UM
Qty
KPA 1052 Single Horizontal Installation Kit
(P/N:050-03629-0000)
Table 8
Part Number
Description
057-05944-0033
KSO KIT LABEL, KPA 1052
EA
071-00185-0000
TRAY ASSEMBLY
EA
UM
Qty
KPA 1052 Installation Kit (tray only)
(P/N:050-03629-0001)
Table 9
Part Number
Description
030-00005-0000
CONN BNC UG88C/U
EA
030-01157-0011
SOCKET CRMP 20G
EA
25
030-01466-0002
CONN, D-SUB, ACCESSORY, CONTACT, CRMP,
PWR
EA
030-03516-0001
CONN, D-SUB, RECPT, COMBO - 27W2,
CRIMP, HOOD, V-LOC
EA
057-05944-0037
TSO KIT LABEL
EA
KPA 1052 Installation Kit (connectors only)
(P/N:050-03629-0002)
Table 10
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1.C.(3)
KRX 1053 Receiver/Exciter Installation Kits
Part Number
Description
UM
Qty
030-00005-0000
CONN BNC UG 88C/U
EA
030-01451-0000
CONTACT SOCKET
EA
104
030-03518-0001
CONN, D-SUB, RECPT, HI-DENS, W/HOOD,
104 POS
EA
057-05944-0021
TSO KIT LABEL
EA
071-00184-0000
TRAY ASSEMBLY
EA
UM
Qty
KRX 1053 Installation Kit
(P/N 050-03628-0000)
Table 11
Part Number
Description
057-05944-0032
TSO KIT LABEL
EA
071-00184-0000
TRAY ASSEMBLY
EA
UM
Qty
KRX 1053 Installation Kit (tray only)
P/N 050-03628-0001
Table 12
Part Number
Description
030-00005-0000
CONN BNC UG88C/U
EA
030-01466-0001
CONN D-SUB,ACCESSORY, CONTACT 22AWG,
CRMP, FEMALE
EA
104
030-03518-0001
CON, D-SUB, ACCESSORY, HOOD, 104 POS
EA
057-05944-0038
TSO KIT LABEL
EA
KRX 1053 Installation Kit (connectors only)
P/N 050-03628-0002
Table 13
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Part Number
Description
UM
Qty
VERTICAL FIN ANCHOR KIT
EA
5 ARM 200-6LV
VERTICAL FIN “V” TENSION KIT
EA
50 ARM 300-205
ANTI-PRECIPITATION ANTENNA WIRE
FT
45
FEED-THROUGH INSULATOR
EA
WIRE RELEASE TOOL
EA
INSTALLATION INSTRUCTIONS
EA
FEED-THROUGH ASSEMBLY
EA
3280
25 ARM 300-20E 30°
50 ARM 300-250
FORM #101
16390
Long-Wire Antenna Installation Kit
(P/N:071-01214-0001)
Table 14
1.D. Equipment Required But Not Supplied
Equipment Required But Not Supplied
AIRCRAFT EQUIPMENT
DESCRIPTION
Power 28 Vdc
Primary power source.
Lighting Bus 5 Vac, 5
Vdc or 28 Vdc
Panel lighting power source for control
units, according to version installed.
Microphone
Noise cancelling, 150 ohms nominal,
pre-amplified.
Headphones
Approx. 600 ohms.
Selective Calling
Decoder
AVTGA
Required if SELCAL operation is
desired.
Ground Strap
047-06261-0036
Long Wire HF Antenna
Long Wire HF Antenna Kit available as
P/N 071-01214-0000.
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Equipment Required But Not Supplied
AIRCRAFT EQUIPMENT
DESCRIPTION
Grounded Tranline
Grounded tranline: Towel bar with 1
inch diameter recommended. Contact:
Trivec-Avant Corp.
17831 Jamestown Ln.
Huntington Beach, CA 92647
714-841-4976
WIRE:
Available as:
RG 400
Double shielded coax P/N 024-00075-0000
RG 142B/U
Double shielded coax P/N 024-00002-0000
24 AWG
Single conductor P/N 025-00029-0009
20 AWG
Single conductor P/N 025-00031-0000
16 AWG
Single conductor P/N 025-00031-0003
24 AWG
Single conductor with shield and jacket
P/N 025-05018-0000
18 AWG
Single conductor with shield and jacket
P/N 025-05019-0000
24 AWG
Two conductor with shield and jacket
P/N 025-05020-0000
24 AWG
Three conductor with shield and jacket
P/N 025-05023-0000
CABLE:
AN-22a
755 Nominal Circular Mil Area*
0.090 inches Max. Overall Diameter
16.45 ohms Max. per 1000 feet @ 20°C
8 amps Max. Cont. Current Rating**
5 amps Max. Cont. Current Rating***
AN-20
1,200 Nominal Circular Mil Area*
0.100 inches Max. Overall Diameter
10.25 ohms Max. per 1000 feet @ 20°C
11 amps Max. Cont. Current Rating**
7.5 amps Max. Cont. Current Rating***
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Equipment Required But Not Supplied
AIRCRAFT EQUIPMENT
DESCRIPTION
AN-18
1,909 Nominal Circular Mil Area*
0.115 inches Max. Overall Diameter
6.44 ohms Max. per 1000 feet @ 20°C
16 amps Max. Cont. Current Rating**
10 amps Max. Cont. Current Rating***
AN-16
2,409 Nominal Circular Mil Area
0.130 inches Max. Overall Diameter
4.76 ohms Max. per 1000 feet @ 20°C
22 amps Max. Cont. Current Rating**
13 amps Max. Cont. Current Rating***
AN-14
3,830 Nominal Circular Mil Area
0.150 inches Max. Overall Diameter
2.99 ohms Max. per 1000 feet @ 20°C
32 amps Max. Cont. Current Rating**
17 amps Max. Cont. Current Rating***
AN-12
6,088 Nominal Circular Mil Area
0.170 inches Max. Overall Diameter
1.88 ohms Max. per 1000 feet @ 20°C
41 amps Max. Cont. Current Rating**
23 amps Max. Cont. Current Rating***
High Voltage HN Cables:
155-02988-2215
Designed for single 1050 installation.
Length is 15” 38.1 cm). Both connectors
are straight.
155-02989-0001
Designed for dual 1050 installation.
Total length is 16” (40.64 cm). Common
leg is 6” (15.24 cm). Each separate leg
is 10” (25.4 cm). All three connectors
are straight.
155-02988-0121
Designed for single 1050 installaton.
21” (53.34 cm) length center, both
connectors right angle, 180 degree
indexing (one connector up, one down).
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Equipment Required But Not Supplied
AIRCRAFT EQUIPMENT
DESCRIPTION
155-02988-0015
Designed for single 1050 installation.
Length is 15” (38.1 cm). Both
connectors are right angle with the
same orientation.
Miscellaneous
installation hardware
mounting brackets
wire
cables
nuts
bolts
Equipment Required But Not Supplied
Table 15
WARNING: THE HIGH VOLTAGE HN CABLES ARE SPECIFICALLY DESIGNED TO
WITHSTAND THE HIGH VOLTAGE GENERATED BY THE KHF 1050
SYSTEM. THEY CAN NOT BE REPLACED BY CABLES THAT HAVE NOT
BEEN TESTED TO THESE HIGH VOLTAGES AT ALTITUDE. THESE
CABLES SHOULD BE PURCHASED DIRECTLY FROM HONEYWELL, OR
FROM THE QUALIFIED VENDOR (CANTON CONNECTOR CORP, 26
WAPPING ROAD, KINGSTON, MA, 02364, 781-585-4315).
1.E. Related Publications
Part Number
Description
006-15640-0000
KAC 1052 Antenna Coupler Maintenance Manual
006-15641-0000
KPA 1052 Power Amplifier Maintenance Manual
006-15642-0000
KRX 1053 Receiver/Exciter Maintenance Manual
006-15655-0000
PS440 Control Display Unit Maintenance Manual
A09-3642
MCDU Multfunction
Mainenance Manual
????
RM-855 Radio Management Unit Maintenance Manual
Control
and
Display
Unit
Related Publications
Table 16
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NOTE:
An Aircraft Station License is required for KHF 1050
HF system equipment. Forms (FCC Form 404, New Aircraft
Station License, or FCC 405A, Renewal of Aircraft
Station License) can be obtained from the nearest FCC
Field Office.
2. Component Configurations
System component configurations are listed in this section. The
overall configuration of a KHF 1050 HF system is dependent on
the component versions installed in the aircraft.
2.A. KAC 1052 Antenna Coupler Unit Configurations
PART NUMBER
064-01074
VERSION
-0101
DESCRIPTON
Antenna Coupler - standard
KAC 1052 Configurations
Table 17
2.B. KPA 1052 Power Amplifier Configurations
PART NUMBER
064-01072
VERSION
-0101
DESCRIPTION
Power Amplifier - standard
KPA 1052 Configurations
Table 18
2.C. KRX 1053 Receiver/Exciter Configurations
PART NUMBER
064-01073
VERSION
-0101
DESCRIPTION
Receiver/Exciter - standard
KRX 1053 Configurations
Table 19
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2.D. PS440 Control Display Unit Configurations
PART NUMBER
VERSION
BEZEL
LCD BACKLIGHTING
071-01605
-0101
Gray
White
071-01605
-0201
Black
White
071-01605
-1101
Gray
Amber
071-01605
-1201
Black
Amber
071-01605
-2101
Gray
NVIS
071-01605
-2201
Black
NVIS
PS440 Configurations
Table 20
2.E. MCDU Multfunction Control and Display Unit Configurations
PART NUMBER
VERSION
USER
7025725
-901
Hawker Horizon
7025725
-910
Planeview GV, Cessna Sovereign
7025725
-920
(no user at present)
7025725
-930
Embraer ERJ 170
7025725
-940
Agusta AB139
MCDU Configurations
Table 21
2.F. RM-855 Radio Management Unit Configurations
PART NUMBER
VERSION
FEATURES
BEZEL
7013270
-967
Radio Management Unit - HF
Gray
7013270
-968
Radio Management Unit - HF
Black
RM-855 Configurations
Table 22
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3. System Leading Particulars
3.A. General Specifications
The KHF 1050 HF System is a solid state design with 200 watts
PEP of output power, supplied by 28 VDC, with an operational
frequency range of 2.0 to 29.9999 MHz with 100kHz resolution.
The KHF 1050 HF System has been type accepted by the FCC and
TSO approved.
3.B. System Operating Modes
3.B.(1)
Emission Modes
Several operating mode options are available for the KHF
1050 HF system to meet particular operational needs.
USB (upper sideband, A3J) AME (amplitude modulation
equivalent A3H) are standard modes of operation permitted
on all system configurations.
LSB (lower sideband, A3J) operation is not permitted for
stations operating under Part 87 FCC (USA) regulations.
LSB may be enabled for use in regions or applications
where its use is authorized.
AM or AME (amplitude modulation equivalent, A3H) may be
used in some areas that lack single-sideband (SSB)
capabilities. AME is a form of amplitude modulation that
is more efficient than full AM, yet compatible with AM
systems.
USB Data and LSB Data are the same as the above-mentioned
USB and LSB modes, except receiver audio and transmitter
audio are connectedto a data-modem rather than to a
speaker or microphone.
A seldom used mode A3A (USB reduced carrier) is available
for use in locations that may utilize the mode.
Table 25, Modes of Operation, lists the modes of operation
applicable to the PS440, MCDU and RM-855.
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CONTROL UNIT
DESIGNATOR
MODE OF OPERATION DESIGNATOR
TECHNICAL
PS440
MCDU
RM-855
AME AM Equivalent
AM
AM
AM
R3E
AM Reduced Carrier
RC
RC
A3J
J3E
USB Upper Sideband
UV
UV
UV
A3J
J3E
LSB Lower Sideband
LV
LV
LV
A7J
J2D
USB Data Upper Sideband Data
UD
UD
UD
A7J
J2D
LSB Data Lower Sideband Data
LD
LD
LD
H2D
AM Data Amplitude Modulation Data
AM
AM
AM
OLD
NEW
A3H
H3E
A3A
ALTERNATE
Modes of Operation
Table 23
3.B.(2)
23 MHz Limit Mode
The KHF 1050 HF system can be strapped to limit the
frequency of operation to an upper limit of 22.9999 MHz
for certification in countries that may require such an
upper frequency limit.
3.B.(3)
Channel Mode
When operating in the channel mode the KHF 1050 HF system
can operate as a simplex, semi-simplex, or receive only
communication system. Transmit and receive frequencies
are selected by selecting a pre-programmed channel.
3.B.(4)
Direct Frequency Mode
When operating in the direct frequency mode the KHF 1050
HF system can operate as a simple communication system
only. Transmit and receive frequency is determined by the
selected frequency, which is entered directly on the
control unit.
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3.B.(5)
Data Mode
When the KRX 1053 Receiver/Exciter is operating in the
DATA mode, interface with data modems or secure voice
systems is enabled. The external modem inputs and external
modem outputs are available to bypass squelch and
compression functions in the KRX 1053. These levels are
controlled by field adjustments.
A 4 dB variation is possible in the audio response when
operating in the data mode.
Audio modulation from the modem is applied to the EXTERNAL
MODEM AUDIO INPUT. When the DATA KEYLINE is grounded, the
transmitter modulation is derived from the DATA AUDIO
INPUT rather than from the microphone.
3.B.(6)
SELCAL Mode
NOTE: SELCAL mode requires a SELCAL decoder, not
supplied.
SELCAL (SELective CALling) may be used to relieve
background noises during flight. The volume may be turned
down completely while the system maintains a watch for a
SELCAL coded audio signal.
When a decoded SELCAL signal is received, a call waiting
is indicated. The SELCAL decoder generates an audio alert
for the crew.
The SELCAL AUDIO OUTPUT is connected to the external
SELCAL decoder. Regardless of the operating mode selected
by the pilot, the SELCAL AUDIO OUTPUT is derived from an
AM receiver inside the KRX 1053.
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3.C. Component Leading Particulars
Leading particulars for components of the KHF 1050 HF system
are listed below.
3.C.(1)
KAC 1052 Antenna Coupler, Leading Particulars
CHARACTERISTIC
DESCRIPTION
Weight:
Refer to Figure 2028 (P/N 155-01774-2028)
Dimensions:
Refer to Figure2028 (P/N 155-01774-2028)
Connector:
Refer to figure 2009 (J10521) and table
2001.
KAC 1052 Leading Particulars
Table 24
3.C.(2)
KPA 1052 Power Amplifier, Leading Particulars
CHARACTERISTIC
DESCRIPTION
Weight:
Refer to figure2031 (P/N 155-01450-0000)
Dimensions:
Refer to figure2031 (P/N 155-01450-0000)
Connector:
3.C.(3)
Refer to figure 2010 (J10524) and table
2002.
KPA 1052 Leading Particulars
Table 25
KRX 1053 Receiver/Exciter, Leading Particulars
CHARACTERISTIC
DESCRIPTION
Weight:
Refer to Figure 2032 (P/N 155-01751-0000)
Dimensions:
Refer to Figure 2032 (P/N 155-01751-0000)
Connector:
Refer to figure 2011 (J10531) and table
2003.
KRX 1053 Leading Particulars
Table 26
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3.C.(4)
PS440 Control Display Unit, Leading Particulars
NOTE: Refer to the PS440 Control Display Unit Component
Maintenance Manual P/N 006-15655-XXXX for more
description of the PS440.
CHARACTERISTIC
DESCRIPTION
Weight:
Refer to Figure 2022 (P/N ???)
Dimensions:
Refer to Figure 2022 (P/N ???)
Connector:
Refer to figure 2011 (J1) and table 2004.
3.C.(5)
PS440 Leading Particulars
Table 27
MCDU Multifuction Control and Display Unit, Leading
Particulars
NOTE: Refer to the MCDU Multifunction Control and Display
Unit Maintenance Manual P/N A09-3642 for more
description of the MCDU.
CHARACTERISTIC
DESCRIPTION
Weight:
Refer to figure 2023 (P/N 7025726-930)
Dimensions:
Refer to figure 2023 (P/N 7025726-930)
Connector:
Refer to figure 2016 (J???) and table
2007.
MCDU Leading Particulars
Table 28
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3.C.(6)
RM-855 Radio Management Unit, Leading Particulars
NOTE: Refer to the RM-855 Radio Management Unit Component
Maintenance Manual P/N ??? for more description of
the RM-855.
CHARACTERISTIC
DESCRIPTION
Weight:
Refer to figure 2026 (P/N 7013270)
Dimensions:
Refer to figure 2026 (P/N 7013270)
Connector:
Refer to figure 2016 (J???) and table
2007.
4. System Function
RM-855 Leading Particulars
Table 29
4.A. System Functional Overview
The KHF 1050 HF Communication System supports a wide variety
of communication requirements. The major components of the
KHF 1050 HF system are listed below:
KAC 1052 Antenna Coupler
KPA 1052 Power Amplifier
KRX 1053 Receiver/Exciter
Compatible Control Display Unit
The basic KHF 1050 HF system is a mobile communication system
for aircraft. It operates in a frequency range between 2.0
and 29.9999 MHz offering several different emission modes to
provide voice communication.
By including the appropriate components in an installation,
the KHF 1050 HF system capabilities can be increased to allow
the system to support Data, SELCAL, and Secure Voice
communication.
4.A.(1)
System Power UP
COMMENTARY: INSERT POWER-UP DESCRIPTION HERE.
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4.A.(2)
Channel Operation
COMMENTARY: INSERT CHANNEL OPERATION DESCRIPTION HERE.
4.A.(3)
Direct Frequency Mode
COMMENTARY: INSERT DIRECT FREQUENCY MODE OPERATION HERE.
4.B. Dual System
COMMENTARY: INSERT ANY DUAL SYSTEM FUNCTIONALITY INFO HERE.
5. Component Functions
5.A. PS440 Control Display Unit Unit Function
See Pilots Guide P/N 006-18289-0000 for PS440 Control Display
Unit operation.
5.B. MCDU Multfunction Control and Display Unit Function
See Pilots Guide P/N XXXX for MCDU Multfunction Control and
Display Unit operation.
5.C. RM-855 Radio Management Unit Function
See Pilots Guide P/N XXXX for RM-855 Radio Management Unit
operation.
6. System Inputs/Outputs
6.A. Input/Output Signals
See Paragraph 5.C.(5) in the Installation and Maintenance
section of this book.
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TESTING AND FAULT ISOLATION
1. Fault Isolation
Fault isolation locates the source of system failure at the black
box or aircraft wiring level. Fault isolation is typically
performed on the ground in response to failures indicated during
post-installation checkout, preflight testing, or flight
operation.
Perform the System Performance Check (Paragraph 2.) and refer to
the Fault Isolation Checklist (Paragraph 3.) for fault isolation
in the KHF 1050 HF system.
2. System Performance Check
The system check detects problems in the installation that may
cause the HF system to fail, to degrade performance, or cause
damage to the HF system, such as:
Intermittent or improperly connected cables or connectors.
Defective units.
Poorly regulated aircraft DC power.
Poor grounding of KHF 1050 HF system or poor aircraft bonding.
Audio ground loops.
RF interference.
CAUTION: POWER CARTS MAY REGULATE POORLY WHEN SUBJECTED TO STRONG
RF FIELDS. IF MORE THAN 20% FLUCTUATIONS IN POWER CART
VOLTAGES ARE NOTED WHEN TRANSMITTING, DO NOT CONTINUE
TESTING WITH POWER CART.
CAUTION: SOME INTERMITTENT CONDITIONS MAY CAUSE OUTPUT
TRANSISTORS TO FAIL, THEREFORE TRANSMIT ONLY AFTER
OTHER CHECKS HAVE SUCCESSFULLY COMPLETED.
Perform the steps in the stated sequence.
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2.A. Preliminary Check
1.
Prior to turning the system on, ensure that all connectors
are properly seated in their proper location.
2.
Turn the system on. As the system turns on it performs a
brief self-test.
Normally, after a few seconds, the HF controller (or HF
window of a multi-function controller) will show an HF
operating frequency, mode of operation and other operating
parameters. Refer to the operating manual for the specific
controller for specific operation and the information
available on the display.
3.
Push the TEST button on the controller to perform a system
test. The pilot-activated self-test takes approximately
15 seconds to complete.
4.
KXR 1053 Receiver/Exciter Built-In-Test
The receiver/exciter design incorporates provisions for
monitoring its own operation to detect any condition or
occurrence that the operator (a flight crew member) might
observe and interpret as a reason for requesting a
maintenance action.
These maintenance observations are stored in non-volatile
memory within the receiver/exciter so they can be
retrieved with appropriate test equipment.
If a sufficiently serious fault is detected, the
“receiver/exciter status” bit of the Maintenance Status
message, label 351, is set to indicate a fault.
The maintenance data collection provision includes the
following three types of monitoring: Power-On, Continuous
Monitoring and Initiated Tests. The BITE tests that shall
be performed at system turn-on, at pilot activated, or
continuously are summarized in Table 1001. The table shows
which tests are performed for each of the three types of
monitoring.
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FUNCTION
TURN ON PILOT CONT Label 351
Discrete Line Check
29
Flash ROM Checksum
29
DSP ROM
29
DSP RAM
29
DSP CLOCK (60MHz)
29
RF Board XMT Operation
29
RF Board RCV Operation
29
RF Board DSP Clock (60MHz)
29
15V Power Line
29
9V Power Line
29
3.3V Power Line
29
PRIMARY Power Fail
(28V Power Line Voltage)
29
Rx/Ex Internal Temperature
PA OK/NG
18
ACP OK/NG
28
Rx/Ex - CPLR Serial Communication
29
29
ACP WARN
15
ACP Tune Fail
28 Note 1
RX/EX BITE Matrix
Table 1001
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5.
KPA 1052 Power Amplifier Built-In-Test
The power amplifier design incorporates provisions for
monitoring its own operation to detect any condition or
occurrence that the operator (a flight crew member) might
observe and interpret as a reason for requesting a
maintenance action.
The maintenance data collection provision includes the
following three types of monitoring: Power-On Test,
Conditions Monitoring and Initiated test, as defined
below.
PA Alarm 1 - This alarm will be generated whenever the SWR
at the input to the antenna coupler is too high. The
antenna coupler will try to retune to lower SWR during
transmit mode.
PA Alarm 2 - This alarm will be generated whenever an
invalid band error request occurs, a higher than normal
SWR within the PA is generated, a higher than normal
output power occurs, an over-temperature condition
exists, or the PA has no output power. This alarm inhibits
all transmissions.
The BITE tests that shall be performed at system turn-on,
at pilot activated or continuously are summarized in Table
1002.
Label 351
POWER ON PILOT CONT
Bit
Note 1
FUNCTION
Load SWR (PA ALM#1)
During Tx Only
Temperature (PA ALM#2)
Transmitter Power at 50 W
(With KAC 1052 in the system)
18
18
18
Note1: PA ALM#1 and PA ALM#2 are sent to the KAC 1052 with
discrete lines. The KAC 1052 then sends the PA Alarm data to the
KRX 1053. Label 351 information is actually sent by the KRX 1053.
PA BITE Matrix
Table 1002
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6.
KAC 1052 Antenna Coupler Built-In-Test
The antenna coupler design incorporates provisions for
monitoring its own operation to detect any condition or
occurrence that the operator (a flight crew member) might
observe and interpret as a reason for requesting a
maintenance action.
These maintenance observations are stored in non-volatile
memory within the antenna coupler so they can be retrieved
with appropriate test equipment.
If the maintenance observation is serious enough to
indicate Antenna Coupler failure, the failure shall be
communicated to the receiver/exciter for reporting to the
HF controller.
The BITE tests that shall be performed at system turn-on,
at pilot activation or continuously are summarized in
Table 1003.
POWER
Label
ON PILOT CONT 351 Bit
Note 1
FUNCTION
Internal memory
28
12V Power Line
28
5V Power Line
28
Bridge amplifier output voltage
28
Low pressure alarm signal (PRESS ALM)
15
Leak pressure warning level
(Temp, Press)
15 & 28
RF power level and Power Sensor
PA alarm #1 signal (PA ALM#1)
During Tx Only
18
PA alarm #2 signal (PA ALM#2)
18
VSWR sensor
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Impedance sensors
28
Note 1: The Label 351 information is actually sent by the KRX
1053 in response to RS-422 serial data sent by the KAC 1052 to
the KRX 1053.
Antenna Coupler BITE Matrix
TablE 1003
7.
In the event
turn-on test
message will
may indicate
•
•
•
•
that a problem is detected during either the
or the pilot-activated self-test, an error
appear on the controller. The error message
a failure of one or more of the following:
Controller
Receiver/Exciter
Power Amplifier
Antenna Coupler
Refer to Section 3, Fault Isolation Checklist.
2.B. Receiver Performance Check
1.
If an operating frequency is properly displayed on the
controller, listen to the speaker or headphones. Ensure
that the aircraft audio panel is properly set to select
the HP audio.
2.
Select the USB Voice (UV) mode, SBH type squelch. (SBH is
the default squelch type. If using an RM855, only the SB
type is available.) Adjust the squelch level to OFF.
Adjust the volume control on the PS440 controller, and/or
the volume control on the audio panel. Depending on the
frequency or channel selected, a signal may be heard - or
perhaps just atmospheric static.
NOTE: If the aircraft is located in a metal hangar, both
signals and noise may be weak. It is advisable to
have the aircraft outside the hangar to perform the
receiver or transmitter tests.
Select a channel with a known usable signal. One
possibility is one of the time-and-frequency standard
stations operating on frequencies of 2500.0 MHz, 5000.0
MHz, 10000.0 kHz, 15000.0 kHz or 20000.0 kHz.
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These stations are located in Fort Collins, Colorado and
Kekaha, Hawaii. Consult the HF frequency propagation chart
in Table 2001 for an overview of the frequency to use for
a particular time of day and distance from the
transmitter. These stations transmit in the AM mode.
However, they can be received by the KHF 1050 System in
the USB Voice (UV), LSB Voice (LV), AM or Reduce-Carrier
(RC) modes.
If a signal can not be heard,check the connetion to the
antenna, the antenna itself and ensure that all coaxial
cables that interconnect the KHF 1050 System are properly
connected.
4.
Adjust the squelch level as needed to LOW, MED or MAX to
achieve the minimum level required to suppress the
receiver noise with no signal present.
2.C. Transmitter Performance Check
1.
Select the HF positon on the audio panel microphone
switch.
CAUTION: VERIFY THAT NO ONE IS STANDING ON THE GROUND NEAR
THE AIRCRAFT OR TOUCHING THE AIRCRAFT. WITH MANY
TYPES OF AIRCRAFT HF ANTENNAS, THE ENTIRE
AIRFRAME BECOMES PART OF THE ANTENNA. ANYONE
STANDING ON THE GROUND COULD RECEIVE AN
ELECTRICAL SHOCK IF TOUCHING THE AIRCRAFT, OR IF
ENTERING OR EXITING THE AIRCRAFT DURING A
TRANSMISSION BY THE KHF 1050 SYSTEM. DO NOT
OPERATE THE HF SYSTEM WHILE THE AIRCRAFT IS BEING
FUELED.
2.
Select a channel on which the aircraft is authorized to
transmit, with the apropriate mode of operation, which is
typically USB Voice (UV). Momentarily press the PTT switch
to start the antenna tuing process.
Assuming the KAC 1052 Antenna Coupler has not previously
been on this frequency, the antenna coupler will begin to
tune to the antenna and the controller display will begin
to indicate that tuning is taking place. Refer to the
controller information for the details of how tuning is
annunciated by the particular controller being used.
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In the event that the operating frequency selected had
previously been tuned by the KAC 1052 Antenna Coupler, the
antenna coupler will utilize stored tune information and
match to the antenna in less than 50msec. However, changes
in antenna impedance can occasionally result in the KAC
1052 needing to retune on a previously tuned frequency.
3.
Upon completion of the tune cycle, the tune indication
will disappear and the display will return to a normal
recieve window. The receiver audio will likely be stronger
than it was prior to tuning the antenna and it may be
necessary to readjust the squelch if there is significant
noise on the channel. The system is now ready to transmit
voice communications.
4.
In order to ensure good audio quality of the transmitted
signal, a microphone-ground-loop test is recommended. To
check for microphone ground loops, select the AM mode on
an unused frequency. Key the system with no modulation,
preferably covering the microphone element with your hand.
Listen for any squeal or popping sound in the speaker or
headphones. A squeal or popping sound tends to indicate
that a microphone ground loop exists. Microphone ground
loops will result in distorted audio. Such a ground loop
is usually the result of the microphone audio low line
being tied to airframe ground at multiple points.
5.
Listen to the sidetone in the headphones or speaker while
transmitting, both in USB Voice (UV) and in AM. A raspy
sound may indicate that RF interference is feeding back
into the HF or audio system.
6.
While transmitting a voice test message in USB Voice (UV),
observe other electrical equipment in the aircraft and
note any interference observed that correlates to the HF
transmission.
7.
Voice communications should be established with a ground
station or another aircraft. See Section 7.B.(4)(b).
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3. Fault Isolation Checklist
FAULT
ACTION
Turn-On or
Pilot-Activated
Self-Test Fault:
1. Check the connections to each unit
having an associated error condition.
Verify that 28 VDC power is being
2. applied to each unit and that the
voltage is steady.
3. Ensure the integrity of each coaxial
cable in the system and verify that each
is connected to the proper connectors.
Tuning Fault:
1. Press PTT switch to retune antenna.
2. If unit fails to retune, select a
different frequency and try to retune
the antenna at the new frequency.
3. Turn the KHF 1050 system off and check
the coaxial cable connections between
the KAC 1052 and the antenna feedpoint.
4. Ensure that there is no evidence of
arcing in the connectors, antenna
feed-through insulator or at the
antenna.
5. Check the antenna. If it is a grounded
antenna, verify that the DC resistance
to ground is very low. If it is an open
wire antenna, verify that the resistance
to ground is very high.
Refer to the bonding information in
Section 6A.
Contact Honewell Product Support for further assistance.
Fault Isolation Checklist
Table 1004
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INSTALLATION AND MAINTENANCE
1. General Coverage
This section provides service personnel with installation and
maintenance information pertaining to the following KHF 1050 HF
Communication System components:
KAC 1052 Antenna Coupler
KPA 1052 Power Amplifier
KRX 1053 Receiver/Exciter
NOTE:
For installation and maintenance information on the
Gables PS440 refer to the PS440 Control Display Unit
Installation Manual P/N 006-10655-XXXX.
For installation and maintenance information on the MCDU
Multifunction Control and Display Unit refer to the MCDU
Installation Manual P/N XXXX.
For installation and maintenance information on the
RM-855 Radio Management Unit refer to the RM-855
Installation Manual P/N XXXX.
2. Unpacking
Use care when unpacking KHF 1050 HF system components. Open
shipping cartons and carefully remove all items. Check that all
items on the packing list are included. Visually inspect each
component for damage incurred during shipment: dents, deep
abrasions, chipped paint, etc. If any component is damaged,
notify the transportation carrier immediately.
3. Pre-installation Testing
All components of the KHF 1050 HF system have been adjusted and
tested before shipment and pre-installation testing is not
required. If pre-installation bench testing of any unit is
desired, refer to bench test section of the applicable
maintenance manual. Refer to DESCRIPTION AND OPERATION, section
1.F., for a list of related maintenance manuals.
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4. Equipment Changes and Markings
A standardized marking system identifies equipment with
incorporated modifications. Refer to the Publication Index for
a list of Service Bulletins affecting the various units in the
KHF 1050 HF system.
5. Installation Planning
5.A
General Considerations
General information for installation of the KHF 1050 HF
system, instructions for location of system components,
interwiring and cable fabrication, and mode strapping options
are provided in the following paragraphs. Interconnect
diagrams at the end of this section show the interconnection
of various system components.
The KHF 1050 HF system should be installed in the aircraft in
a manner consistent with acceptable workmanship and
engineering practices and according to instructions set forth
in this publication.
The installer should make a thorough visual inspection and
perform the post-installation and operational checks of the
system to ensure that the system has been properly and safely
installed in the aircraft.
CAUTION: AFTER INSTALLATION OF THE CABLING AND BEFORE
INSTALLATION OF THE EQUIPMENT, SUPPLY AIRCRAFT
PRIMARY POWER TO THE CABLES AND CHECK THAT POWER IS
APPLIED ONLY TO THE UNIT CONNECTOR PINS SPECIFIED IN
THE INTERWIRING DIAGRAMS.
5.B. Location of Equipment
5.B.(1)
KAC 1052 Antenna Coupler Mounting Location
Refer to Figure 2028 for mounting dimensions.
The location of the KAC 1052 Antenna Coupler is critical.
It must be located very close to the feedpoint of the
antenna or the antenna feed-through insulator. In order
to maximize the efficiency of the HF system, it is
desireable to keep the length of the feedline less than
12 inches, if possible. The feedline should not exceed 24
inches, including the connector length.
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NOTE: Due to the high level of RF voltage the KHF 1050
system is capable of generating, only a specially
fabricated Honeywell feedline may be used. Refer to
Section 1.C.(1) for appropriate part numbers.
The KAC 1052 must be mounted in a location that will allow
it to be well bonded to the airframe. See Section 6A for
bonding considerations.
For best reliability, the KAC 1052 should be mounted such
that it is not subjected to excessive vibration or heat.
The KAC 1052 can be mounted to either vertically or
horizontally on a horizontal surface.
5.B.(2)
KPA 1052 Power Amplifier Mounting Location
Refer to Figure 2031 for mounting dimensions.
The location of the KPA 1052 is generally not critical.
It is recommended that it be mounted near the KAC 1052,
to minimize loss in the coaxial cable interconnecting the
KPA 1052 and the KAC 1052.
The cable length between the KPA 1052 and the KAC 1052
should not exceed 50 feet.
For best reliability, the KAC 1052 should be mounted such
that it is not subjected to excessive vibration or heat.
The KAC 1052 can be mounted to either a vertical or
horizontal surface.
5.B.(3)
KRX 1053 Receiver/Exciter Mounting Location
Refer to Figure 2032 for mounting dimensions.
Mount the KRX 1053 so that the connection between the KRX
1053 and the KAC 1052 does not exceed 50 feet. The KRX
1053 is typically mounted vertically on a horizontal
surface.
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5.B.(4)
Control Display Unit Mounting Location
Refer to Figures 2022, 2023 and 2026 for mounting
dimensions.
Refer to the installation manual for the PS440 Control
Display Unit, P/N 006-10655-XXXX, for PS440 mounting
instructions.
Refer to the installation manual for the MCDU, P/N XXXX,
for MCDU mounting instructions.
Refer to the installation manual for the RM-855, P/N XXXX,
for RM-855 mounting instructions.
5.B.(5)
Antenna Location
The antenna is a primary factor for maximum performance
of the KHF 1050 HF system. While numerous options are
available in the choice of antenna configurations, some
configurations are better suited for a particular
installation than others. Commonly used aircraft HF
antennas will generally fall into one of four categories:
y "V" (Referring to the V shape formed by the antenna wire)
and Long wire antenna.
y Short grounded wire antenna.
y Shunt antenna.
Characteristics of these commonly used antennas and the
compromise associated with each type are described below,
so the installer can select the antenna that is best
suited to a particular aircraft and type of operation. All
antennas should be installed in a manner that does not
jeopardize the safe operation of the aircraft.
5.B.(6)(a) "V" and Long Wire Antenna Mounting Location
Because of their generally good performance,
consideration should be given to the use of "V" and long
wire antennas on all installations, except very high
speed fixed wing aircraft and helicopters. Wire
antennas are not recommended for use on helicopters,
due to safety concerns in the event of an antenna wire
breakage.
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"V" and long wire antenna performance will be enhanced
by striving to meet the following criteria:
y Maximize the length of wire (up to approximately 60
feet or 18 m.). The total length of the antenna should
be at least 25 feet (7.6 m).
y Maximize the separation between the antenna wire and
the aircraft structure. This is usually achieved by
attaching the tensioner as high as possible on
vertical stabilizers.
5.B.(6)(a)1 Wing Tip “V” Antenna Mounting Location
The wing type “V” is one of the most effective HF
antennas which can be utilized on an aircraft. It is
well suited for slow and moderate speed aircraft which
require optimum HF communication and performance. It
will exhibit a rather omnidirectional radiation pattern
and provide good efficiency at all frequencies. It has
the disadvantages of having high drag, and on low wing
aircraft is prone to being walked into. The length of
a wing tip “V” antenna is usually 30 to 45 feet (9.2 to
13.7 m).
Typical Wing Tip “V” Antenna
Figure 2001
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5.B.(6)(a)2 Inverted “V” Antenna Mounting Location
The inverted “V” antenna is recommended when a wing “V”
is not practical and the antenna coupler is to be
mounted in the aft position of the aircraft. The
inverted “V” antenna will produce maximum signal
strength off the side of the aircraft and will produce
a moderate amount of drag.
The vertical fin anchor should be located as high as
possible on the vertical stabilizer. The feedthru
insulator should be located approximately 3 feet (0.9
m) forward of the base of the vertical stabilizers and
near the centerline of the top of the aircraft.
Typical Inverted “V” Antenna
Figure 2002
5.B.(6)(b) Long Wire Antenna Mounting Location
The long wire antenna is used when the KAC 1052 Antenna
Coupler is located in the forward part of the aircraft.
It will provide maximum signal radiation off the sides
of the aircraft. Significant nulls in signal strength
may be noted off the nose and tail of the aircraft.
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Typical Long Wire Antenna
Figure 2003
5.B.(6)(c) Short Grounded Wire Antenna Mounting Location
Short grounded wire antennas may be utilized on higher
speed and/or high altitude aircraft. These short wire
antennas have a minimum drag and do not develop as high
of RF voltages as do the longer wire antennas, making
them suitable for operations up to 55,000 feet. However
the efficiency of the short antenna will be lower,
especially at the low frequencies.
Typical short wire antenna lengths are approximately 8
feet (2.4 m) to 18 feet (5.5 m). The large antenna
currents require the use of a wire with low RF
resistance (i.e., large diameter and highly conductive
surface) to reduce the power losses in the wire. The
feedline and the antenna grounding must have very low
RF resistance. Only a tensioner with an attached ground
wire should be used to terminate the antenna.
5.B.(6)(c)1 Short Wire to Vertical Stabilizer Antenna Mounting
Location
The most common form of short grounded wire antennas
ahve the feedthru insulator mounted on the upper aft
part of the fuselage, as far forward of the vertical
stabilizer as is practical. The antenna wire runs from
this feedthru to the tip of the vertical stabilizer. It
is important to ground this wire as high as possible on
the vertical stabilizer to maximize the efficiency and
to reduce the nulls in the pattern. This antenna will
generally exhibit maximum radiation off the side of the
aircraft.
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Typical Short Wire to Vertical Stabilizer Antenna
Figure 2004
5.B.(6)(c)2 Short Wire to Wing or Horizontal Stabilizer Antenna
Mounting Location
In installations where the short wire to the vertical
stabilizer may not be practical, consideration may be
given to a short grounded wire to the wing or horizontal
stabilizer. While such antennas produce only minimum
drag, they will tend to be directional off the side of
the aircraft. These antennas are also prone to being
walked into. Maximum separation between the wire and
the aircraft structure is important, as is maximizing
the length of the wire.
Typical Short Wire to Wing Antenna
Figure 2005
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Typical Short Wire to Horizontal Stabilizer Antenna
Figure 2006
5.B.(6)(d) Shunt Antenna Mounting Location
Two types of shunt antennas are commonly used. The most
preferable type, on a fixed wing aircraft, is designed
by the airframe manufacturer as a part of the airframe
structure. It is most often an electrically isolated
section of the leading edge of the vertical stabilizer,
grounded at the top. The other type of shunt antenna is
often referred to as a "tranline" or "towel bar", which
is simply a rod or tube run external to a section of
the airframe and grounded.
Shunt antennas are suitable for high altitude aircraft
because they do not develop extremely high voltage but
do not develop extremely high RF current (up to 50
amps).
5.B.(6)(d)1 Leading Edge of Vertical Stabilizer Antenna Mounting
Location
A shunt antenna that is built into the leading edge of
the vertical stabilizers has become popular on many jet
aircraft. Such an antenna provides no drag, exhibits a
rather omnidirectional radiation pattern and if well
bonded can provide moderate to good efficiencies. Good
bonding of the antenna and the KAC 1052 Antenna Coupler
is essential.
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A large diameter feedline exhibiting extremely low RF
resistance must be used between the KAC 1052 Antenna
Coupler and the antenna.
Typical Shunt Leading Edge Antenna
Figure 2007
5.B.(6)(d)2 Shorted Tranline or Towel Bar Antenna Mounting Location
Grounded transline (transmission line), often referred
to as “towel bar” antennas because their shape
resembles a towel bar, are best suited for helicopter
applications. They can be attached parallel to the
tailboom and fed on the forward end. These antennas
provide minimum drag but suffer from poor efficiencies,
especially at low frequencies. Loss with this type of
antenna can be minimized by observing the following
criteria:
• Space the antenna as far off the airframe as
possible. 18 inches (0.46 m) is preferred, with
spacing of less than 9 inches (23 cm) being
acceptable.
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• The antenna diameter should be a minimum of 1 inch
(2.54 cm) and constructed out of a highly conductive
material. Copper or aluminum is generally used, with
silver plating being recommended. Stainless steel
should be avoided due to its high resistance. This
antenna should be a continuous piece (non-spliced)
and should be well bonded at both ends.
• A minimum antenna length of 12 feet (3.7 m) should
be used. The feedline coax length should be limited
to 6 inches (15 cm).
• It is preferable to attach the antenna to a
protruding surface, such as a tail boom or a
stabilizer element. Attaching to a wide section of
the fuselage will generally give poor performance.
Typical Shorted Tranline or Towel Bar Antenna
Figure 2008
5.C. Interwiring and Cable Fabrication
5.C.(1)
Fabrication and Routing
Figure 2033 provides a KHF 1050 HF Communication System
interconnect summary.
Cabling must be fabricated according to the interwiring
diagrams. The length of the wires to parallel pins should
be approximately the same length, for best current
distribution.
Wires for optional functions are shown on the interwiring
diagrams. The actual use of these wires will depend upon
the installation, customer requirements and capability of
the units installed.
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When the cables are installed in the aircraft, they must
be supported firmly enough to prevent movement and should
be carefully protected against chafing. Additional
protection should also be provided in all locations where
the cables may be subject to abuse.
In wire bundles, the cabling should not be tied tightly
together as this tends to increase the possibility of
noise pickup and similar interference. When routing
cables through the airframe, the cables should cross
high-level lines at a right angle.
Wiring harness and antenna cable should be routed in such
a manner that they do not adversely affect the operation
of the shock mounts.
The installer must be knowledgeable of any system
variation peculiar to the installation such as strapping
requirements described in section 5.D. Furthermore, the
installer should use ARINC Characteristic 735 as a guide
and reference throughout the fabrication and installation
of the cabling in the aircraft.
5.C.(2)
Interface Capability and Requirements
All RF coaxes must be double shielded.
In systems that employ speech processing, special care
should be taken in the routing of the microphone input
line. This line is susceptible to noise. It should not
be routed in the same harness containing high current
lines.
5.C.(3)
Primary Power and Circuit Breaker Requirements
All units in the KHF 1050 system should be protected by
circuit breakers in the positive primary power lines. The
KPA 1052 should use an individually dedicated 30 amp
slow-acting circuit breaker. The KAC 1052 and KRX 1053 can
share a common 5 amp circuit breaker, or be individually
protected by 5 amp circuit breakers for each. If a PS440
controller is used in the system, it can share a circuit
breaker with the KRX 1053. An MCDU or an RM-855 must not
share a circuit breaker with any HF system component.
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5.C.(4)
Antenna Cable Type
The cable connecting the KAC 1052 antenna output (J10528)
to the antenna or antenna feed-through must be a specially
fabricated feedline supplied by Honeywell. Due to the high
level of RF voltage the KHF 1050 system is capable of
generating, substitute cables must not be used. Refer to
Section 1.C.(1) for appropriate part numbers for the
Honeywell supplied HN-to-HN feedline assemblies.
5.C.(5)
Connectors
Mating connectors for the KHF 1050 HF system components
are identified on the appropriate outline drawing.
Associated connector installation kits are specified in
DESCRIPTION AND OPERATION section of this manual.
Crimping, insertion, extraction tools are identified in
section 5.C.(6).
5.C.(5)(a) KAC 1052 Antenna Coupler Connector
KAC 1052 Antenna Coupler Connector (J10521) Pin Configuration
Figure 2009
KAC 1052 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
DESCRIPTION
PRI PWR RTN
PRIMARY POWER RETURN
PWR CONT RTN
POWER ON/OFF CONTROL RETURN
STRP A
STRAP A
STRP COM
STRAP COMMON
RCA
CPLR TXD BUS +
CRA
CPLR RXD BUS +
BUS COM
BUS COMMON
EXCTR INHB +
EXCTR INHIBITION +
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KAC 1052 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
DESCRIPTION
10
TUN FAIL +
TUNE FAIL +
11
RC COM
PHOTO-COUPLER COMMON SOURCE
12
EXCTR TUN REQ -
EXCTR TUNE REQUEST -
13
FG
FRAME GROUND
14
APC H
APC HIGH
15
PA INHB+
PA INHIBITION +
16
PA SI
PA SERIAL DATA
17
PA SCK
PA SERIAL CLOCK
18
PA RCK
PA SERIAL STROBE
19
PA RST
PA RESET
20
+27.5V PRI PWR
+27.5 VDC PRIMARY POWER
21
PWR CONT
POWER ON/OFF CONTROL
22
STRP B
STRAP B
24
RCB
CPLR TXD BUS -
25
CRB
PHOTO-COUPLER COMMON SOURCE
26
EXCTR COM
EXCTR COMMON
27
MATCH ON -
MATCHING CIRCUIT ON -
28
BRDG ON +
BRIDGING AMPLIFIER ON +
29
CR COM
PHOTO-COUPLER COMMON SOURCE
30
BFRD KEY -
BUFFERED KEY -
31
FG
FRAME GROUND
32
CP COM
PHOTO-COUPLER COMMON SOURCE
33
PA BFRD KEY -
PA BUFFERED KEY -
34
PA ALM + #1
PA ALARM + #1
35
PA ALM + #2
PA ALARM + #2
36
PC COM
PHOTO-COUPLER COMMON SOURCE
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KAC 1052 CONNECTOR PIN DEFINITIONS
PIN
37
SIGNAL NAME
APC L
DESCRIPTION
APC LOW
KAC 1052 Antenna Coupler Connector (J10521) Pin Definitions
Table 2001
5.C.(5)(b) KPA 1052 Power Amplifier Connector
KPA 1052 Power Amplifier Connector (J10524) Pin Configuration
Figure 2010
KPA 1052 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
DESCRIPTION
A1
+27.5V PRI PWR
+27.5 VDC PRIMARY POWER
A2
PRI PWR RTN
PRIMARY POWER RETURN
FG
FRAME GROUND
PA SI
PA SERIAL DATA
PA RCK
PA SERIAL STROBE
PA ALM + #1
PA ALARM + #1
PA RST
PA RESET
APC H
APC HIGH
10
APCL
APC LOW
11
PWR CONT RTN
POWER ON/OFF CONTROL RETURN
17
CP COM
PHOTO-COUPLER COMMON SOURCE
18
PA SCK
PA SERIAL CLOCK
19
PA INHB+
PA INHIBITIION +
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KPA 1052 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
DESCRIPTION
20
PA ALM + #2
PA ALARM + #2
21
PC COM
PHOTO-COUPLER COMMON SOURCE
22
PA BFRD KEY -
PA BUFFERED KEY -
23
PWR CONT
POWER ON/OFF CONTROL
KPA 1052 Power Amplifier Connector (J10524) Pin Definitions
Table 2002
5.C.(5)(c) KRX 1053 Receiver/Exciter Connector
KRX 1053 Receiver/Exciter Connector (J10531) Pin Configuration
Figure 2011
KRX 1053 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
I/O
DESCRIPTION
PWR CONT RTN
POWER ON/OFF CONTROL RETURN
A615 DATA LDR INP#2(A)
A615 DATA LOADER INPUT #2 (A)
A615 DATA LDR OUT#2(A)
A615 DATA LOADER OUTPUT #2 (A)
CMU OUT(A)
CMU OUTPUT (A)
CMC INP(A)
CMC INPUT (A)
CMC OUT(A)
CMC OUTPUT (A)
A615 DATA LDR OUT#1(A)
A615 DATA LOADER #1 (A)
HF CONT INP #2(A)
HF CONTROLLER INPUT #2(A)
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KRX 1053 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
HF CONT INP #1(A)
10
SPARE
11
I/O
DESCRIPTION
HF CONTROLLER INPUT #1(A)
RCB
CPLR RXD BUS -
12
BUFFERED KEY
BUFFERED KEY -
13
KEY EVENT
KEY EVENT
14
EXCTR TUNE REQUEST -
EXCTR TUNE REQUEST -
15
TUNE MODE
CONTINUOUS/BURST TUNING MODE
16
VO PTT H
VOICE PUSH-TO-TALK HIGH
17
SW LD#1
SOFTWARE LOAD #1
18
AGC TEST
AGC TEST
19
SELCAL AUD H
SELCAL AUDIO HIGH
20
EXT MODEM AUD H
EXTERNAL MODEM AUDIO HIGH
21
MIC AUD H
MIC AUDIO HIGH
22
+27.5V PRI PWR
+27.5 VDC PRIMARY POWER
23
PWR CONT
POWER ON/OFF CONTROL
24
A615 DATA LDR OUT#2(B)
A615 DATA LOADER OUTPUT #2 (B)
25
CMU INP(A)
CMU INPUT (A)
26
GENL PRP BUS INP(A)
GENERAL PURPOSE BUS INPUT (A)
27
CMC OUT(B)
CMC OUTPUT (B)
28
A615 DATA LDR INP#1(A)
A615 DATA LOADER INPUT #1 (A)
29
HF TUNE/M STAT(A)
HF TUNING/MODE STATUS (A)
30
HF CONT INP #1(B)
HF CONTROLLER INPUT #1 (B)
31
SPARE
32
RCA
CPLR TXD BUS +
33
TXD(OUT)
RS232 MAINT MODE TXD BUS (OUT)
34
MATCH ON -
MATCHING CIRCUIT ON -
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KRX 1053 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
I/O
DESCRIPTION
35
RC COM
36
STUCK MIC PTCT
STUCK MIC PROTECTION
37
OTHER SIDE PTT
OTHER SIDE PTT
38
EXT DATA KEYLINE H
EXTERNAL DATA KEYLINE HIGH
39
PHOTO-COUPLER COMMON SOURCE
40
RCV AUD/SIDETN H
RECEIVE AUDIO/SIDETONE HIGH
41
EXT MODEM AUD OUT L
EXT MODEM AUDIO OUTPUT LOW
42
EXT MODEM AUD INP H
EXT MODEM AUDIO INPUT HIGH
43
+27.5V PRI PWR
+27.4 VDC PRIMARY POWER
44
A615 DATA LDR INP#2(B)
A615 DATA LOADER INPUT #2 (B)
45
CMU INP(B)
CMU INPUT (B)
46
CMU OUT(B)
CMU OUTPUT (B)
47
CMC INP(B)
CMC INPUT (B)
48
A615 DATA LDR INP#1(B)
A615 DATA LOADER INPUT #1 (B)
49
A615 DATA LDR OUT#1(B)
A615 DATA LOADER OUTPUT #1 (B)
50
HF CONT INP #2(B)
HF CONTROLLER INPUT #2 (B)
51
SPARE
52
SPARE
53
CRA
CPLR RXD BUS +
54
BRDG ON +
BRIDGING AMPLIFER ON +
55
EXCTR INHB +
EXCTR INHIBITION +
56
DATA XMT INHB
DATA TRANSMIT INHIBIT
57
CONT SEL
CONTROLLER SELECT
58
VO PTT L
VOICE PUSH-TO-TALK LOW
59
DATA CAPBLTY INSTL
60
SPARE
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KRX 1053 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
I/O
DESCRIPTION
61
SELCAL AUD L
SELCAL AUDIO LOW
62
EXT MODEM AUD INP L
EXT MODEM AUDIO INPUT LOW
63
MIC AUD L
MIC AUDIO LOW
64
PRI PWR RTN
PRIMARY POWER RETURN
65
SPARE
66
DATA BUS SHLD GND
GND
DATA BUS SHIELD GROUND
67
DATA BUS SHLD GND
GND
DATA BUS SHIELD GROUND
68
GENL PRP BUS
69
DATA BUS SHLD GND
GND
DATA BUS SHIELD GND
70
DATA BUS SHLD GND
GND
DATA BUS SHIELD GND
71
HF TUNE/M STAT(B)
72
DATA BUS SHLD GND
GND
73
SPARE
74
CRB
CPLR RXD BUS -
75
RXD(IN)
RS232 MAINTENANCE MODE
76
CR COM
77
TUN FAIL +
78
GENERAL PURPOSE BUS INPUT (B)
HF TUNING/MODE STATUS (B)
DATA BUS SHIELD GROUND
PHOTO-COUPLER COMMON SOURCE
TUN FAIL +
79
R SIDE
RIGHT SIDE
80
EXT DATA KEYLINE L
EXTERNALDATA KEYLINE LOW
81
82
RCV AUD/SIDETN L
83
ANLG SHLD GND
GND
ANALOG SHIELD GROUND
84
ANLG SHLD GND
GND
ANALOG SHIELD GROUND
85
PRI PWR RTN
PRIMARY POWER RETURN
86
DATA BUS SHLD GND
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RECEIVE AUDIO/SIDETONE LOW
DATA BUS SHIELD GROUND
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KRX 1053 CONNECTOR PIN DEFINITIONS
PIN
SIGNAL NAME
I/O
87
DATA BUS SHLD GND
GND
DATA BUS SHIELD GROUND
88
DATA BUS SHLD GND
GND
DATA BUS SHIELD GROUND
89
DATA BUS SHLD GND
GND
DATA BUS SHIELD GROUND
90
DATA BUS SHLD GND
GND
DATA BUS SHIELD GROUND
91
DATA BUS SHLD GND
GND
DATA BUS SHIELD GROUND
92
DATA BUS SHLD GND
GND
DATA BUS SHIELD GROUND
93
FG
GND
FIELD GROUND
94
DATA BUS SHLD GND
GND
DATA BUS SHIELD GND
95
BUS COM
GND
BUS COMMON
96
GND
GND
GND
97
EXCTR COM
GND
EXCITER COMMON
98
L SIDE
99
GND
100
NAR/W FREQ RNG
101
FG
GND
FRAME GROUND
102
ANLG SHLD GND
GND
ANALOG SHIELD GROUND
103
ANLG SHLD GND
GND
ANALOG SHIELD GROUND
104
ANLG SHLD GND
GND
ANALOG SHIELD GROUND
DESCRIPTION
LEFT SIDE
GND
DISCRETE SIGNAL GROUND
NARROW/WIDE FREQ RANGE
KRX 1053 Receiver/Exciter Connector (J10531) Pin Definitions
Table 2003
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5.C.(5)(d) PS440 Control Display Unit Connector
PS440 Control Display Unit Connector (J1) Pin Configuration
Figure 2012
PS440 CONNECTOR PIN DEFINITIONS
PIN
PIN
28 VDC In
DC Ground
Chassis Ground
Spare
Reserved
Spare
Spare
Spare
Spare
10
Spare
11
Spare
12
AM Inhibit In
13
Spare
14
Freq Range In
15
Spare
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PS440 CONNECTOR PIN DEFINITIONS
PIN
PIN
16
Spare
17
HF On/Off Out
18
Spare
19
ARINC 429 Out A
20
Spare
21
Reserved
22
28 VDC Dimming Bus
23
ARINC 429 In #1A
24
Test Out
25
Reserved
26
Spare
27
Spare
28
Spare
29
Spare
30
Spare
31
Spare
32
Spare
33
Spare
34
Spare
35
Reserved (ALE Inhibit In)
36
LSB Voice and Data Inhibit In
37
FCDE Enable In
38
Spare In
39
ARINC 429 Out B
40
Spare
41
Reserved
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PS440 CONNECTOR PIN DEFINITIONS
PIN
PIN
FUNCTION
42
ARINC 429 In #1B
43
Spare
44
Spare
45
Spare
46
Spare
47
Spare
48
AA
HFDL Inhibit In
49
BB
SDI Config In
50
CC
Reduced Carrier Inhibit In
51
DD
0.1 kHz Enable In
52
EE
Spare Out #1
53
FF
Spare
54
GG
5 VDC / AC Lighting High
55
HH
Spare
56
JJ
Spare
57
KK
Spare
58
LL
Spare Out #2
59
MM
HF Datalink Out
60
NN
Lighting Lo
61
PP
USB Data Inhibit In
PS440 Control Display Unit Connector (J1) Pin Definitions
Table 2004
5.C.(5)(e) MCDU Multifunction Control and Display Unit Connectors
For MCDU Multifunction Contol and Display Unit connection
information, refer to Installation Manual P/N: XXXX.
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5.C.(5)(f) RM-855 Radio Management Unit Connector
RM-855 Radio Management Unit Connector (J????) Pin Configuration
Figure 2016
RM-855 CONNECTOR PIN DEFINITIONS
PIN
FUNCTION
CONNECT TO
LRU IDENT
OPEN - PILOT SIDE HF (ARINC SDI = 01B)
GROUND - COPILOT SIDE HF (ARINC SDI = 10B)
STRAP COMMON
JUMPER TO X FOR GROUND
(-) 429 RXA
RMU1 429 TX
(+) 429 RXA
(-) 429 RXB
(+) 429 RXB
(-) 429 RXC
(+) 429 RXC
AA
(-) 429 TXA
(+) 429 TXA
CC
(-) 429 TXB
BB
(+) 429 TXB
A/B SELECT
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FMS 429 RX
HF1 - HF1 RMU 429 RX
HF2 - HF2 RMU 429 RX
FMS 429 RX
LEAVE OPEN
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RM-855 CONNECTOR PIN DEFINITIONS
PIN
FUNCTION
CONNECT TO
C SELECT
LEAVE OPEN
BURST ENABLE
JUMPER TO e - ARINC 429 BURST ENABLE
STOP SCAN
JUMPER TO u - STOP SCAN ENABLE
RETRANSMIT
JUMPER TO q - STOP SCAN ENABLE
RM-855 Radio Management Unit Connector (J????) Pin Definitions
Table 2007
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5.C.(5)(f) BNC Connector Assembly (P/N 030-00005-0001)
BNC Connector Assembly Procedure
Figure 2017
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5.C.(6)
Connector Pin Tools
The crimping tool and associated positioner used during
the fabrication of cables are identified in figure 2018.
The insertion and extraction tools used during the
fabrication of cables are identified in figure 2019.
Crinping Tool
Figure 2018
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Insertion and Extraction Tools
Figure 2019
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5.D. Strapping Options
5.D.(1)
KRX 1053 Receiver/Exciter Strapping Options
Refer to Table 2008 for KRX 1053 strapping options.
5.D.(1)(a) Power ON/OFF Control - (J10531-23) PWR CONT
An external controller turns on the KRX 1053
Receiver/Exciter by asserting the POWER ON/OFF CONTROL
discrete input. In an installation in which LRU power
is to be controlled by a radio master switch or relay,
this input may be permanently strapped to ground.
This input is continuously read.
5.D.(1)(b) Controller Select - (J10531-57) CONT SEL
When the TUNING MODE discrete input is not assorted,
the CONTROLLER SELECT discrete determines which HF
controller input is active.
NOTE:Asserted = GND, Not Asserted = OPEN
The KRX 1053 Reciever/Exciter accepts tuning and
control data from the HF CONTROLLER INPUT #1 when the
CONTROLLER SELECT and TUNING MODE discrete inputs are
not asserted.
The KRX 1053 Receiver/Exciter accepts tuning and
control data from the HF CONTROLLER INPUT #2 when the
CONTROLLER SELECT discrete input is asserted and the
TUNING MODE discrete input is not asserted.
This input is continuously read.
5.D.(1)(c) Burst/Continuous Tuning Mode - (J10531-15) TUNE MODE
When the BURST/CONTINUOUS TUNING MODE discrete input is
not asserted, the KRX 1053 Receiver/Exciter operates
with continuous tuning and mode control data and the
CONTROLLER SELECT discrete input determines the active
controller input.
When the BURST/CONTINUOUS TUNING MODE discrete input is
asserted, the KRX 1053 Receiver/Exciter operates by
receiving bursts of tuning data.
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In a system consisting of two external HF controllers,
with one controller connected to HF CONTROLLER INPUT #1
data bus and the other connected to HF CONTROLLER INPUT
#2 data bus, this tuning and control mode allows the
receiver/exciter to automatically accept
tuning/control data bursts from either controller.
In either the BURST or CONTINUOUS mode, the
receiver/exciter sends continuous data to the
controller.
The KRX 1053 Receiver/Exciter processor samples the
state of this discrete input only at initial power
application. The state of this discrete is assumed to
not change during operation.
5.D.(1)(d) Key Event - (J10531-13) KEY EVENT
The KRX 1053 Receiver/Exciter asserts the KEY EVENT
discrete output when the transmitter is activated by
any activation method.
This output may be used by external equipment, such as
a flight recorder, to sense when the HF system is
transmitting.
5.D.(1)(e) Left Side (J10531-98) L SIDE and Right Side (J10531-13)
When the LEFT SIDE discrete input is asserted and the
RIGHT SIDE descrete input is not asserted, the KRX 1053
Receiver/Exciter accepts ARINC 429 data in which the
SDI field is set to 10B, 00B, or 11B. (SDI field 00B
identifies an “all call” message and SDI field 11B
identifies a “tune both” message.)
Additionally, the KRX 1053 Receiver/Exciter sets the
SDI field of all ARINC 429 transmitted messages to 01B
(bit 9 = 1, bit 10 = 0). This condition identifies the
system as HF #1.
When the RIGHT SIDE discrete input is asserted and the
LEFT SIDE discrete input is not asserted, the KRX 1050
Receiver/Exciter accepts ARINC 429 data in which the
SDI field is set to 10B, 00B, or 11B.
(SDI field 00B identifies an “all call” message and SDI
field 11B identifies a “tune both” message.)
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Additionally, the KRX 1053 Receiver/Exciter sets the
SDI field of all ARINC 429 transmitted messages to 10B
(bit 9 = 0, bit 10 = 1). This condition identifies the
system as HF #2.
When neither the LEFT SIDE discrete input nor the RIGHT
SIDE discrete input is asserted, or when both the LEFT
SIDE and RIGHT SIDE discrete inputs are asserted:
• The KRX 1053 Receiver/Exciter does not accept ARINC
429 data.
• The KRX 1053 Receiver/Exciter sets the SDI field of
all ARINC 429 transmitted messages to 00B, and it
sets bits 30 and 31 (status field) of all messages
except that with label 351 to 11B, indicating an
invalid condition shall set bits 30 and 31 (status
field) of the label 351 Maintenance Status message
to 00B, indicating a fault condition. It is intended
that at least one of these discrete inputs, but not
both, be asserted.
The KRX 1053 Receiver/Exciter processor samples the
state of these discrete inputs only at initial power
application. The state of these discretes are assumed
to not change during operation.
5.D.(1)(f) Narrow/Wide Freq Range - (J10531-100) NAR/W FREQ RNG
When the NARROW/WIDE FREQ RANGE discrete input is
asserted, the KRX 1053 Receiver/Exciter restricts
operations to the frequency range from 2.0000 MHz
through 22.9999 MHz, and clears bit 18 of the
Receiver/Exciter Output Label 037, Word ID #1 (Control
Status) word to logic 0.
When the NARROW/WIDE FREQ RANGE discrete input is not
asserted, the KRX 1053 Receiver/Exciter operates over
the full frequency range from 2.0000 MHz through
29.9999 Mhz.
If the NARROW/WIDE FREQ RANGE discrete input is
asserted and the HF controller commands a transmit or
receive frequency below 2.0000 MHz or above 22.9999
MHz, the receiver/exciter sets bits 30 and 31 of all
transmitted Frequency/Control Status words (label 037)
to 11B, indicating an invalid condition.
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The KRX 1053 Receiver/Exciter processor samples the
state of this discrete input only at initial power
application. The state of this discrete is assumed not
to change during operation.
5.D.(1)(g) Maintenance Test- (J10531-78) MAINT TEST
hen the MAINTENANCE TEST discrete input is asserted,
the KRX 1053 Receiver/Exciter RS-232 Maintenance port
accepts test modes including the generation of a
two-tone PEP test signal.
This input is continuously read.
5.D.(1)(h) Stuck MIC Protection- (J10531-36) STUCK MIC PTCT
When the STUCK MIC PROTECTION discrete input is
asserted, the receiver/exciter stops transmitting after
a transmission duration equal to a constant set in
non-volatile memory during manufacturing test or
service center test.
• This time duration can be set to a value between 30
seconds and 240 seconds. The default time is 120
seconds.
• The KRX 1053 Receiver/Exciter processor samples the
state of this discrete input only at initial power
application. The state of this discrete is assumed
to not change during operation.
5.D.(1)(i) External Data Keyline HI (J10531-38) EXT DATA KEYLINE H
When the external resistance between the EXTERNAL DATA
KEYLINE HI and LO pins is ten ohms or less, the KRX 1053
Receiver/Exciter activates the transmitter and uses the
audio at the EXTERNAL MODEM AUDIO INPUT as the
modulation source.
The KRX 1053 Receiver/Exciter drives a current of at
least ten milliamps through any resistance of ten ohms
or less between the EXTERNAL DATA KEYLINE HI and LO
pins.
The EXTERNAL DATA KEYLINE LO pin may be connected
externally to airframe ground in some installations.
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The KRX 1053 Receiver/Exciter interprets a resistance
of ten ohms or less between the EXTERNAL DATA KEYLINE
HI and LO pins as a command to transmit, whether the LO
pin is grounded or left floating.
This input is continuously read.
5.D.(1)(j) External Modem Audio Input High/Low- (J10531-42/62) EXT
MODEM AUD INP H/L
The audio signal level is typically 0.775 VRMS across
600 ohms.
The KRX 1053 Receiver/Exciter presents a balanced,
floating 600 ohm load to this signal.
This input does ot present direct-current bias to the
signal source.
There is no audio clipping or compression associated
with this input at levels below 1.55 VRMS when adjusted
as in paragraph one above.
This input is factory adjusted so that at standard
temperature and primary power voltage, a 1 kHz modem
input signal of 0.775 VRMS yields full Data USB output
power from the KRX 1053 Receiver/Exciter and an input
of 0.39 V yields 6 dB +/-0.5 dB more output power than
that obtained with 0.775 V of input signal.
5.D.(1)(k) Voice Push-To-Talk HI- (J10531-16) VO PTT H
When the external resistance between the VOICE
PUSH-TO-TALK HI and LO pins is ten ohms or less, the
KRX 1053 Receiver/Exciter activates the transmitter and
uses the audio at the MIC AUDIO INPUT as the modulation
source.
The KRX 1053 Receiver/Exciter drives a current of at
least ten milliamps through any resistance of ten ohms
or less between the VOICE PUSH-TO-TALK HI and LO pins.
The KRX 1053 Receiver/Exciter interprets a resistance
of ten ohms or less between the VOICE PUSH-TO-TALK HI
and LO pins as a command to transmit, whether the LO
pin is grounded or left floating.
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This input is continuously read.
NOTE: The VOICE PUSH-TO-TALK LO pin may be connected
externally to airframe ground in some
installations.
5.D.(1)(l) Other Side PPT- (J10531-37) OTHER SIDE PTT
When asserted, the OTHER SIDE PTT input prevents the
system from transmitting.
This input is continuously read.
In a dual system installation, when this input is
connected to the KEY EVENT output of the KRX 1053
Receiver/Exciter in the opposite system, it prevents
this system from transmitting whenever the KEY EVENT of
the other system is asserted.
When asserted, bit 18 of message (Output label 037),
word ID #1 “Other side keyed” is set to 0.
The OTHER SIDE PTT and the KEY EVENT discrete
inputs/outputs function as an “interlock” to ensure
that both systems can not transmit at the same time.
Such an interlock function is required when two HF
systems share a common antenna on an aircraft.
Example: If the co-pilot is transmitting (or tuning the
antenna) on the right-side HF system, the pilot will
not be able to key the left-side system until the
right-side system returns to the receive mode. Once the
right-side system has returned to receive mode, the
pilot will be able to immediately transmit (or tune the
antenna) on the left-side system.
Unit/Pin
Function
Strapping
Comment
76J1-23
Power
On/Off
MAU/MCDU
May be grounded for KHF 1050 System
to be be always on.
76J1-15
Tuning Mode
Ground
Accepts burst ARINC 429 input.
76J1-36
Stuck MIC
TBD
Ground to limit transmission to 30
second default.
76J1-57
Controller
Select
Open
N/A with Burst Tuning Control.
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Unit/Pin
Function
Strapping
Comment
76J1-79
Right Side
Side
Depenent
Ground if right-side system. Open
if a single KHF 1050 installation.
76J1-98
Left Side
Side
Dependent
Ground if left-side system. Open if
a single KHF 1050 installation.
76J1-100
Narrow/Wide
Open
Allows 2.0000 to 29.9999 MHz
operation.
KRX 1053 Receiver/Exciter Straps
Table 2008
Unit/Pin
Function
Strapping
Comment
76J1-16
Voice
PTT
To Audio Panel
May be pulled to aircraft ground
or 76J1-58.
76J1-38
External
Data
Keyline
Open
Used only for data transmission.
May be pulled to aircraft ground
or 76J1-60.
76J1-13
Key
Event
Open in a
single KHF 1050
installation
May also be used to suppress
other equipment in the aircraft
during HF transmission.
76J1-37
Other
Side PTT
Open in a
single KHF 1050
installation
In a dual KHF 1050 installation,
connect to the keyline of the
other system.
KRX 1053 Logic Inputs and Outputs
Table 2009
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6. Equipment Installation
6.A
Bonding Connections
6.A.(1)
Antenna Coupler Bonding Connections
The importance of properly bonding the KAC 1052 Antenna
Coupler to the airframe can not be over emphasized.
Good RF bonding of the KAC 1052 Antenna Coupler to the
aircraft fuselage is essential in achieving maximum
efficiency from the system and minimizing interference
with other systems in the aircraft.
The primary bonding path is through a ground strap from a
ground post on the KAC 1052 to a point on the airframe
near the antenna feed point. More than one ground strap
can be used. Additional grounding is achieved via the KAC
1052 mounting tray and mounting shelf. The shield of the
coax also contributes to the overall bond of the KAC 1052
to the airframe.
6.A.(2)
Bonding Strap Considerations
Make bonding straps as short as practical and installed
in such a manner that the resistance of each connection
does not exceed 0.003 ohms. The straps must not interfere
with moveable aircraft elements, such as surface controls,
nor should the movements of these elements result in
damage to the bonding straps.
The bonding strap should be made of a solid conductive
material rather than braid. Strap thickness should be
0.010 inches or greater. A one inch wide silver plated
copper strap, available from Honeywell, is recommended.
P/N 047-06261-0036 is a 36 inch length of the strap.
6.A.(3)
Bonding Connection and Corrosion Prevention Techniques
Because the mounting surfaces are an important part of the
ground system, bonding between these surfaces requires
special attention.
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NOTE: All nonconductive finishes such as paint, anodizing
films, or zinc chromate, must be totally removed
from the entire mating surface before assembly.
Techniques such as spot-facing or cleaning only
small area of the mating surfaces do not provide
adequate RF bonding.
Ground strap connections must be totally free of any
non-conductive finishes.
Corrosion resistance for aluminum mating surfaces should
be achieved by cleaning the aluminum surfaces with
Alumiprep #33 (P/N 016-01127-0000), and then applying
Alodine #1001 (P/N 016-01128-0000). Alodine #1001 (as well
as Alodine #600) provides good electrical conductivity,
other Alodine coatings should be avoided.
Only after the shelves are assembled and mounted, and
ground straps installed, may nonconductive or poorly
conductive protective finishes, such as zinc chromate be
applied. Periodic inspection should be made of all bonds
to ensure that corrosion is not occurring. Any observed
corrosion should be cleaned off.
6.B. KAC 1052 Antenna Coupler Installation
6.B.(1)Select a mounting location for the KAC 1052 Antenna Coupler,
referring to Section 5.B.(1).
6.B.(2)Power Requirements
The KAC 1052 Antenna Coupler will operate from a 28 Vdc
power supply. The unit must be connected to the aircraft
power supply with a circuit breaker with not less than 25
Amp rating.
6.B.(3)
Grounding Requirements
NOTE: The importance of properly bonding the KAC 1052
Antenna coupler to the airframe can not be over
emphasized.
NOTE: Except for the ground provided by the feedline coax
shield, bonding should not be done with braided wire
but with solid conductive straps, typically one
inch wide.
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Good RF bonding of the KAC 1052 Antenna Coupler to the
aircraft fuselage is basic in achieving maximum efficiency
from the system and eliminating any possible intereference
to other systems in the aircraft. See Section 6.A for
bonding considerations.
6.B.(4)
After a location has been selected, remove the mounting
tray from the four shock mounts.
6.B.(5)
Place each shock mount dead center over each center tap
position.
6.B.(6)
Drill four #8 holes per each shock mount.
6.B.(7)
Thoroughly clean the mounting surface where the bonding
straps will be attached. If the surface is aluminum, apply
Alodine #1001 per Section 6.A.(1).
6.B.(8)
Mount the shock mounts to the mounting surface with four
each # 8-32 fasteners and lock nuts, installing the ground
straps under the appropriate shock mounts.
6.B.(9)
Attach the mounting tray to the four shock mounts,
installing the two tray ground straps.
6.B.(10) With the mounting tray secured, locate a point on the
airframe structure near the antenna feedthru for attaching
a unit to airframe ground strap. Drill two #6 holes, clean
and apply Alodine per section 6.A.(1). Connect a ground
strap between this point and the KAC 1052 Antenna Coupler
ground stud.
NOTE: This strap shold not be braided wire, but a solid
strap.
6.B.11
Place the KAC 1052 Antenna Coupler unit into the mounting
tray and secure it in place with two knurled knobs.
Provisions for safety wire installation is provided, if
desired.
6.C. KPA 1052 Power Amplifier Installation
6.C.(1)Select a mounting location for the KPA 1052 Power Amplifier,
referring to Section 5.B.(2).
6.C.(2)Power Requirements
The KPA 1052 Power Amplifier will operate from a 28 Vdc
power supply. The unit must be connected to the aircraft
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power supply with a circuit breaker with not less than 25
Amp rating.
6.C.(3)
Grounding Requirements
Except for the ground provided by the feedline coax
shield, bonding should not be done with braided wire but
with solid conductive straps, typically one inch wide.
6.C.(4)
After a location has been selected, remove the mounting
tray from the four shock mounts.
6.C.(5)
Place each shock mount dead center over each center tap
position.
6.C.(6)
Drill four #8 holes per each shock mount.
6.C.(7)
Thoroughly clean the mounting surface where the bonding
straps will be attached. If the surface is aluminum, apply
Alodine #1001 per Section 6.A.(1).
6.C.(8)
Mount the shock mounts to the mounting surface with four
each # 8-32 fasteners and lock nuts, installing the ground
straps under the appropriate shock mounts.
6.C.(9)
Attach the mounting tray to the four shock mounts,
installing the two tray ground straps.
6.C.(10) With the mounting tray secured, locate a point on the
airframe structure near the antenna feedthru for attaching
a unit to airframe ground strap. Drill two #6 holes, clean
and apply Alodine per section 6.A.(1). Connect a ground
strap between this point and the KPA 1052 Power Amplifier.
NOTE: This strap shold not be braided wire, but a solid
strap.
6.C.(11) Place the KPA 1052 Power Amplifier unit into the mounting
tray and secure it in place with two knurled knobs.
Provisions for safety wire installation is provided, if
desired.
6.D. KRX 1053 Receiver/Exciter Installation
6.D.(1)
Select a mounting location, referring to Section 5.B.(3).
6.D.(2)
After a location has been selected, remove the mounting
tray from the four shock mounts.
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6.D.(3)
With the shock mounts removed and the tray laying flat
against the mounting structure, center tap four positions
at which the shock mounts will mount to the tray.
6.D.(4)
Place each shock mount dead center over each center tap
position.
6.D.(5)
Drill two #6 holes per each shock mount.
6.D.(6)
Clean and Alodine the mounting surface where the ground
strap will be attached. See Section 6.A.(1).
6.D.(7)
Mount the shocks mounts with two each #6-32 fasteners and
lock-nuts, installing the ground strap under the
appropriate shock mount.
6.D.(8)
Attach the mounting tray to the four shock mounts,
installing the ground strap.
6.D.(9)
Slide the KRX 1053 Receiver/Exciter into the mounting
tray. Secure the KRX 1053 Receiver/Exciter into place on
the mounting tray with the fluted knob. Provisions for
safety wire installation is provided, if desired.
6.E. Compatible Control Display Unit Installation
For installation information on the PS440, refer to the PS440
Control Display Unit Installation Manual P/N 006-10655-XXXX.
For installation information on the MCDU Multifunction Contol
and Display Unit, refer to Installation Manual P/N: XXXX.
For installation information on the RM-855 Radio Management
Unit, refer to Installation Manual P/N: XXXX.
6.F. Antenna Installation
6.F.(1)
Selecting an Antenna Configuration.
While numerous options are available in the choice of
antenna configurations, some configurations will be
better suited for a particular installation than others.
Refer to section 5.B.(7) when selecting an antenna
configuration.
6.F.(2)
Refer to section 6.A.(1) for special bonding consideration
when installing an antenna configuration.
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7. Inspection, System Checkout, and Flight Test Procedures
7.A. Inspection
Table 2010 is a visual inspection/check procedure that should
be performed after the system installation as part of a system
checkout. In addition, the procedure can be used as periodic
maintenance inspection check.
EQUIPMENT
KAC 1052
INSPECTION/CHECK PROCEDURE
1.
2.
KPA 1052
1.
2.
KRX 1053
1.
2.
Antenna
Verify that all connections to the KAC 1052 are
secure.
Verify that the ground strap is connected to the
ground post.
Verify that all connections to the KPA 1052 are
secure.
Verify that all coaxial cables are properly
connected to the KRX 1053 and the KAC 1052.
Verify that all connections to the KAC 1052 are
secure.
Verify that the controller connector is secure.
Verify that the antenna HN connector is securely
tightened.
Visual Inspection Procedure
Table 2010
7.B. System Checkout
7.B.(1)
General
The KHF 1050 HF Communication System requires three stages
of post-installation testing to ensure proper operation:
(1) A system interwiring check is performed before
installation of system components and before power is
applied, to verify that all aircraft and HF system
interconnections are correct. Continuity of power pins is
double-checked. (2) After system components are
installed, a visual inspection of the equipment and
connections is made. (3) The post-installation test
applies power to system components and checks out system
functions.
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7.B.(2)
System Interwiring Check
7.B.(2)(a) Check that all cables and interwiring are installed
according to the interwiring and cable fabrication
instructions (section 5.C).
7.B.(2)(b) Check that all functions are properly strapped to
reflect the aircraft system configuration (section
5.D).
7.B.(2)(c) Double-check continuity of all power pins.
7.B.(3)
Visual Inspection
Perform the visual inspection/check procedure (Table
2010).
7.B.(4)
Post-Installation Test
7.B.(4)(a) Perform the System Performance Check in FAULT
ISOLATION, Section 2.
7.B.(4)(b) Establish communications with another HF station in
each of the six communication bands (see Table 2011).
Request a signal/audio quality report.
7.C. Flight Test
While in flight, establish communications with another HF
station. It is important that the frequencies selected be
apropriate for the distance between the aircraft and the other
station (see Table 2011). Request a signal and audio quality
report, preferably on several different operating
frequencies.
Frequency Band
(MHz)
Daytime Distance
(miles)
Nighttime Distance
(miles)
2.8
up to 100
up to 400
4.4
up to 200
up to 1000
5.5
up to 300
100 to 1200
6.5
100 to 600
200 to 1500 or greater
8.8
200 to 800
400 to 1500 or greater*
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Frequency Band
(MHz)
Nighttime Distance
(miles)
10.0
300 to 1000
500 to 1800 or greater*
11.1
400 to 1200
600 to 1800 or greater*
13.3
600 to 1500 or greater
often unusable
17.9
700 to 1800 or greater*
often unusable
21.9
900 to 1800 or greater*
often unusable
NOTE:
Daytime Distance
(miles)
HF propagation is dependent on the condition of the
ionisphere. Occasionally, distances significantly
different than those indicated above may be realized.
At at times, communication may not be possible on this band
during this time.
Typical HF Signal Propagation Distance
for Common Aviation Bands
Table 2011
8. Removal and Re-installation
CAUTION: Remove all power before performing removal and
re-installation procedures.
8.A. KAC 1052 Antenna Coupler Removal and Re-installation
8.A.(1)
KAC 1052 Antenna Coupler Removal
8.A.(1)(a) Detach cables from connector J10521.
8.A.(1)(b) Remove nut and washer on the GND post. Detach ground
strap. Replace nut and washer on the GND post.
8.A.(1)(c) Loosen retaining screw clamp loacted at the front of
the KAC 1052 Antenna Coupler. Remove unit from rack.
8.A.(2)
KAC 1052 Antenna Coupler Re-installation
8.A.(2)(a) Slide the KAC 1052 Power Amplifier gently into the
mounting rack.
8.A.(2)(b) Engage and tighten retaining screw clamps to secure
unit.
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8.A.(2)(c) Reconnect appropriate cables to connector J10521.
8.B. KPA 1052 Power Amplifier Removal and Re-installation
8.B.(1)
KPA 1052 Power Amplifier Removal
8.B.(1)(a) Detach cables from connector J10524.
8.B.(1)(b) Remove nut and washer on the GND post. Detach ground
strap. Replace nut and washer on the GND post.
8.B.(1)(c) Loosen retaining screw clamp loacted at the front of
the KPA 1052 Power Amplifier. Remove unit from rack.
8.B.(2)
KPA 1052 Power Amplifier Re-installation
8.B.(2)(a) Slide the KPA 1052 Power Amplifier gently into the
mounting rack.
8.B.(2)(b) Engage and tighten retaining screw clamps to secure
unit.
8.B.(2)(c) Reconnect appropriate cables to connector J10524.
8.C. KRX 1053 Receiver/Exciter Removal and Re-installation
8.C.(1)
KRX 1053 Receiver/Exciter Removal
8.C.(1)(a) Detach cables from connector J10531.
8.C.(1)(b) Loosen retaining screw clamp located at the front of
the KRX 1053 Receiver/Exciter. Remove unit from
mounting rack.
8.C.(2)
KRX 1053 Receiver/Exciter Re-installation
8.C.(2)(a) Slide the KRX 1053 Receiver/Exciter gently into the
mounting tray.
8.C.(2)(b) Engage and tighten retaining screw clamps to secure
unit.
8.C.(2)(c) Reconnect appropriate cables to connector J10531.
8.D. Control Unit Removal and Re-installation
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Refer to the installation manual for the PS440 Control
Display Unit, P/N 006-10655-XXXX, for PS440 removal and
re-installaton instructions.
Refer to the installation manual for the MCDU, P/N XXXX,
for MCDU removal and re-installation instructions.
Refer to the installation manual for the RM-855, P/N XXXX,
for RM-855 removal and re-installation instructions.
9. Maintenance Procedures
9.A. In-Aircraft Adjustments
9.A.(1)
General
All alignment and adjustment procedures are accomplished
during bench maintenance. When unit performance indicates
an adjustment or an alignment is required technician
should remove the unit from the aircraft, then reference
should be made to the related Maintenance Manual.
9.A.(2)
Audio Levels
The audio inputs and outputs of the KRX 1053 are factory
adjusted to the following levels:
• Receiver/Sidetone: 7.75 Vrms into 600 ohms at maximum
volume
• Data Input: 0.775 Vrms across 600 ohms
• Microphone Input: 200 mVrms to 2 Vrms (typical) into
150 ohms
• Data Output: 1.775 Vrms into 600 ohms
• SELCAL Output: 0.775 Vrms into 600 ohms
If necessary, these levels may be adjusted for
compatibility with other aircraft systems. To access the
adjustments, loosen the two Dzues fasteners on the top of
the unit and remove the dust cover. Refer to Figure 2020
for adjustment locations. Replace and secure the dust
cover once the adjustment is complete.
9.B. System Protection
The KHF 1050 system is primarily protected by circuit breakers
located at the circuit breaker panel in the aircraft. The KPA
1052 contains an internal fuse for additional protection.
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9.C. Lubrication
No lubrication is required. There are no moving parts that
require lubrication in the KHF 1050 HF Communication System.
9.D. Cleaning
The exterior of the units should be wiped with lint-free cloth
dampened with the approved cleaning agent, when deemed
necessary, depending upon environmental exposure and
intensity of use.
NOTE: Limit cleaning of equipment interiors to that required
at bench overhaul.
10. System Maintenance Programs
10.A.System Maintenance Recommendations
10.A.(1) Perform a system performance check when a component of the
system is replaced or installed.
10.A.(2) To confirm satisfactory system operation a system
performance test may be performed as required.
10.A.(3) After major aircraft maintenance cycles a system
performance check should be performed.
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KRX 1050 Adjustments
Figure 2020
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Blank Page
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COMMENTARY: INSERT OUTLINE DRAWING HERE WHEN AVAILABLE
PS440 Control Display Unit Outline and Mounting
(Dwg P/N ????)
Figure 2022
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MCDU Multifunction Control and Display Unit Outline and Mounting
(Dwg P/N 7025726-930 - Sheet 1 of 3)
Figure 2023
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MCDU Multfunction Control Display Unit Outline and Mounting
(Dwg P/N 7025726-930 - Sheet 2 of 3)
Figure 2024
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MCDU Multifunction Control and Display Unit Outline and Mounting
(Dwg P/N 7025726-930 - Sheet 3 of 3)
Figure 2025
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RM-855 Radio Management Unit Outline and Mounting
(Dwg P/N 7013270 sheet 1 of 2)
Figure 2026
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RM-855 Radio Management Unit Outline and Mounting
(Dwg P/N 7013270 sheet 2 of 2)
Figure 2927
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KAC 1052 Antenna Coupler Single Horizontal Outline and Mounting
(Dwg P/N 155-01774-0000)
Figure 2028
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KAC 1052 Antenna Coupler Single Vertical Outline and Mounting
(Dwg P/N 155-01772-0000)
Figure 2029
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KAC 1052 Antenna Coupler Dual Vertical Outline and Mounting
(Dwg P/N 155-01775-0000)
Figure 2030
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KPA 1052 Power Amplifier Outline and Mounting
(Dwg P/N 155-01750-0000)
Figure 2031
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KRX 1053 Receiver/Exciter Outline and Mounting
(Dwg P/N 155-01751-0000)
Figure 2032
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COMMENTARY: INSERT INTERCONNECT DRAWING HERE WHEN AVAILABLE
KHF 1050 HF System Interconnect
(Dwg P/N 155-01762-0000)
Figure 2033
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COMMENTARY: INSERT KRX 1053 QUALIFICATION FORM HERE WHEN AVAILABLE.
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Creation Date                   : 2003:03:14 22:19:51Z
Mod Date                        : 2003:03:14 16:46:56-06:00
Producer                        : Acrobat Distiller 5.0 (Windows)
Author                          : E086811
Metadata Date                   : 2003:03:14 16:46:56-06:00
Creator                         : E086811
Title                           : 006-10640-0000.book
Has XFA                         : No
EXIF Metadata provided by EXIF.tools
FCC ID Filing: ASYKHF1050

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